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ensimple/202.html.txt ADDED
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+ Love is a mix of feelings and actions that shows a deep liking for someone or something. Romantic love can lead to things such as dating, marriage and sex, but a person can also feel for friends, such as platonic love, or family.
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+ There are also chemical reactions within the brain that can be triggered by the different types of love.
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+
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+ There are many kinds of love. There can be self-love, love towards a friend (such as platonic love), love in romance, towards family, toward God, or towards an object or idea.
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+ One of the most common forms of love is Arely and Elijah’s.
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+ Often love can be confused with other feelings. Being sexually or physically attracted is the feeling of lust. Lust and love may be thought of as different. Normal friendship is a form of love that can be distracted by lust and misunderstanding.
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+ A heart is a well-known symbol of love.
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+ Floral decoration for love
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+ The First Kiss of Adam and Eve, Eden.
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+ Love symbol in tree of Yercaud
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+ People describe the person that they first loved romantically as their "first love." For example, in William Shakespeare's Romeo and Juliet, Romeo is Juliet's very first love. At that time, she was only 13. In Maria Edgeworth's book Belinda, Mr. Vincent says, "First loves are silly things."
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+ The biological model of lust is different from love because it is more like hunger or thirst.[1] Helen Fisher, an expert in the topic of romantic love, divides it into three stages: lust, attraction, and attachment. Lust makes people like each other, attraction encourages people to focus on mating, and attachment helps people tolerate the spouse (or the child).
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+ Lust is the passionate sexual desire that promotes mating. This usually lasts only a few weeks or months. Attraction is more for one person specially. Recent studies in neuroscience say that as people fall in love, the brain releases chemicals, including dopamine. These chemicals make people less hungry and sleepy, and also adds an intense feeling of excitement. Research shows that this stage normally lasts from one and a half to three years.[2]
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+ Since these lust and attraction stages are both described as temporary, a third stage might describe long-term love. Attachment can be used to describe the bonding period that helps keep husband and wife together for many years. Attachment occurs in the longer term.
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+ Love has consequences for health and well-being. Joyful activities such as love activate areas in the brain responsible for emotion, attention,
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+ motivation and memory, and it may further lead to reduction of cortisol, which reduces stress.[3] Some people usually do not feel love. They are called alexithymics or aromonatics.[4]
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+ The Flute is a musical instrument.[1] A person who plays the flute is called a flutist.
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+ There are many kinds of flutes.[2] The most common concert flute is on C tuning. In addition, there are other flutes like piccolos, alto flutes, and bass flutes.
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+ Flutes have changed over time. Pan flutes were made for many centuries. Later, the "Renaissance flute" came into use. In Baroque music flute means recorder, so flutes were called traverso in order not to confuse them. A Bavarian flute maker named Boehm reformed flutes largely to enlarge the volume and improve the way of using the chromatic scale. Later improvements created the modern flute.
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+ There is a large repertoire of music for the flute. Baroque composers used them in their orchestras, usually in pairs, and composed concertos, chamber music and solo music for them. This has continued to the present day. Orchestras have at least 2 flutes each, sometimes three or four. Sometimes there is 1 piccolo which plays an octave higher, or an alto flute which plays a fifth lower than the flute.
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+ The flute sounds very bright and cheerful playing high notes. Please listen, for example, to the Badinerie from Bach's Orchestral Suite no 2. It can also sound very thoughtful or sad when playing in its lowest register. A good example is the opening of Debussy's Prélude à l'après midi d'un faune also flutes Andre a brass instrument and can make a really low pitch.
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+ The flute is a woodwind instrument, but modern flutes are made of metal. It was made of wood a long time ago. It doesn't need lip vibration like brass instruments. Flute players hold it horizontally and make a sound by blowing their breath over the edge of the hole of flute's head. This makes the air vibrate. Flutes need the second most amount of air for an instrument, next to the tuba. Flautists can change the pitch by pushing buttons or changing the direction of the breath. These buttons are called keys. The breath also can change the tone or the volume. Flute has many variation of the sound. The sound of flute is high, so composers often express it as a bird. A flute matches with many instruments such as violin and piano, and is often part of an ensemble.
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+ There are many kinds of flute, so the material also varies.[2] Most flutes are made out of silver. Gold, platinum, wood, and aluminum are also used. The price of flute depends on the material, but there are many different playing situations, so not only expensive flutes are useful.
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+ The oldest kind of side-blown flute was made in India.
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+ In India, a flute called bansuri is used. It has no keys and is often made of bamboo or cane.
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+ In China, a simple flute is used, which has no keys. The Chinese flute sometimes has a thin piece of paper over one hole, which adds a bright raspiness to the sound.
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+ There are other kinds of flute, that are played by blowing into the end, like a recorder. Some of these are tin whistle, flageolet, tabor pipe, and ocarina.
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+ In Japan there is a kind of flute called a shakuhachi, which is made from the bottom of a bamboo plant. It is blown at the end, but is not like the recorder because it does not have an opening that guides the air across a hole that makes the sound.
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+ In South America, there is a flute called a quena that makes its sound the same way as the shakuhachi.
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+ The Pan pipes are a form of flute with no holes. It has more than one pipe connected together, with the bottom closed. The player blows across the top of one of the pipes to make a note. The pipes are in different sizes, so that each one makes a different note. They are named after Pan, who played this instrument in Greek myth.
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+ There are flutes in many cultures. The flute has been described as "a musical weed which springs up everywhere".[3]
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+ A flute in India
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+ A flute in Burma
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+ A flute in Japan
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+ A piccolo in the US
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+ The band Jethro Tull was founded by a flute player (Ian Anderson). It can be heard in many songs. One of them is the hit "Locomotive Breath".
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+ Media related to Flutes at Wikimedia Commons
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+ The circulatory system (also called the cardiovascular system) is the body system that moves blood around the body. It consists of the heart and blood vessels.
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+ Blood vessels that take blood away from the heart are arteries. Arteries divide into smaller arteries as they go away from the heart. The smaller arteries that connect to the capillaries, are called arterioles.
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+ Blood vessels that take blood towards the heart are veins. Veins get bigger as they go towards the heart. The smallest veins are called venules. Pronounced (VEHN-yools)
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+ Capillaries go between arteries and veins. Capillaries are quite thin, hence the name which comes from the Latin capillus[1] meaning "hair."
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+ So blood moves: heart→artery→arteriole→capillary→venule→vein→heart. This is called circulation. There are two different circulations in the circulatory system. The systemic circulation is how blood goes to most of the body. The pulmonary circulation is how blood goes through the lungs. (Pulmonary means ¨about the lungs¨). This is how it works in mammals, including humans. Circulatory systems of other vertebrates differ somewhat.
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+ Blood that comes from the left side of the heart is full of oxygen and nutrients. Nutrients are substances that your body needs to live, like protein, fat, carbohydrates, vitamins, and minerals. The blood brings the oxygen and nutrients to your body.
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+ This blood in systemic arteries that is full of oxygen and nutrients is systemic arterial blood. It is sometimes just called arterial blood.
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+ The biggest systemic artery in the body is the aorta. This is the large blood vessel that comes out of the heart. Smaller arteries branch off from the aorta. These arteries have smaller arteries that branch off from them. The smallest arteries turn into arterioles.
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+ The smallest blood vessels are capillaries. Systemic arterioles turn into capillaries. The blood from arterioles goes into the capillaries. There oxygen and nutrients go out of the blood into the tissue around the capillaries. The blood also picks up carbon dioxide and waste from the tissue. The network of capillaries that brings blood to an area is called a capillary bed.
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+ On the other end of the capillary, it turns into a venule. Venules are the smallest veins. Veins take blood back to the heart. As veins go back to the heart, they merge and get bigger. The biggest systemic veins in the body are the vena cava. There are two vena cava. The inferior vena cava takes blood from the lower part of the body to the right side of the heart. (In anatomy, inferior means below.) The superior vena cava takes blood from the upper part of the body to the heart. (Superior means above.)
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+ This same movement of blood goes through the lungs in the pulmonary circulation.
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+ The blood that the vena cava vein takes to the heart is full of carbon dioxide. It has much less oxygen than (systemic) arterial blood. The right side of the heart pushes the venous blood into the pulmonary artery. The pulmonary artery takes blood to the lungs. In the lungs, the blood goes through the pulmonary capillary bed. (The capillaries that are in the lungs). Here it gets more oxygen. It also drops off carbon dioxide. (This is the opposite of what happens in capillary beds in the rest of the body. In the systemic circulation blood drops off oxygen and picks up carbon dioxide).
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+ After the pulmonary capillary bed, the blood goes to the pulmonary veins. This pulmonary venous blood now is full of oxygen. The pulmonary veins take blood to the left side of the heart. Then the blood goes to the systemic circulation again.
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+ Veins from the gut shunt to the liver before returning to the right atrium and ventricle. The shunt is called the hepatic portal vein.
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+ The meaning of this is as follows. The liver is the body's main chemical factory. It takes in the flow of nutrients from the gut, and adjusts them to suit what the body needs. It can store surplus nutrients, or release extra nutrients from store. It can change the chemical make-up of many nutrients. In this way it adapts to the many different kinds of food which the body digests.
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+ A fetus or foetus is the stage that an organism goes through before it is born as a baby. In humans a fetus is the stage (time of development) after the embryonic stage, and begins during the third to eighth week of development after fertilization of the egg. The fetal stage lasts from 8 weeks after fertilization to birth.
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+ A fetus or foetus is the stage that an organism goes through before it is born as a baby. In humans a fetus is the stage (time of development) after the embryonic stage, and begins during the third to eighth week of development after fertilization of the egg. The fetal stage lasts from 8 weeks after fertilization to birth.
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+ The liver is an organ in the abdomen. It is part of the gastrointestinal system. Sometimes people use hepar- or hepat- as a prefix when they talk about the liver.
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+ The liver does many important things in the body:
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+ There are many different liver diseases. Liver disease can make someone very sick because of all the important work the liver does. People who have bad liver disease usually die unless they can get a liver transplant. This is when the liver from someone who has just died is put in another person by surgery. Such surgeries are usually technically challenging but can be life-saving.
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+ The symptoms of liver disease happen because the liver does not do the work it should.
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+ The liver cannot metabolize toxins and waste so these bad things stay in the blood longer. One thing that builds up is a substance called bilirubin. When red blood cells die, the hemoglobin in them leaks into the blood. The hemoglobin becomes bilirubin (a yellow substance that makes bile yellow). The liver takes the bilirubin out of the blood and puts it into the bile. The bile goes into the intestines and then goes out with the waste from your body. If the liver is hurt, it does not remove the bilirubin, so the bilirubin stays in the body. This makes the person's body look yellow and is known as jaundice. So yellow eyes and yellow skin are symptoms of liver disease.
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+ Other symptoms of liver disease are:
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+ Hepatitis is when liver cells get inflamed (sick). This can be from virus infections. This can be caused by toxins or poisons. The most common toxin to cause hepatitis is alcohol. It can also have genetic, or autoimmune causes, when the body's immune system hurts itself.
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+ Cirrhosis is caused by death of liver cells that happens again and again. When the cells die, scar tissue forms. This scar tissue damages the structure of the liver. This makes the liver not work as well. But it also makes the pressure in the veins that go to the liver very high. This high pressure makes esophageal varices. The most common reason for cirrhosis in the world is hepatitis B virus infection.
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+ Some diseases cause bad things to build up in the liver. Hemochromatosis causes extra iron to build up in the liver. Wilson's disease causes extra copper to build up in the liver. Both of these diseases hurt the cells and can cause very bad liver disease that kills people.
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+ You can also get cancer of your liver. This can be metastatic cancer that came from some other place in your body. The liver is a common place to get metastases because it takes bad things out of the blood. So it takes cancer cells out of the blood and they grow in the liver. Cancer can also grow in the liver. If it grows in the liver it is called hepatocellular carcinoma (liver cell cancer). Most hepatocellular carcinoma is from cirrhosis.
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+ Some liver diseases can be treated easily with medicine. Hemochromatosis is treated by taking blood from people every two months.
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+ Some liver viruses can be stopped before they start. Two types of viral hepatitis can be stopped with an immunization. Hepatitis A and Hepatitis B can be prevented with a total of five shots in a person's life.
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+ Some liver diseases can only be treated with liver transplant.
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+ Romulus and Remus were the legendary founders of Rome. In Roman mythology they were twin brothers, children of Rhea Silvia and the god Mars.
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+ Rhea Silvia was the daughter of Numitor Silvius, king of Alba Longa, a legendary town founded by Ascanius, son of Aeneas, prince of Troy. When Numitor's brother Amulius became king by force, he made Rhea Silvia a Vestal Virgin, so she would not have children who could be kings instead of him. But the god Mars seduced her and she had the twins Romulus and Remus. Rhea Silvia was punished, and her sons were thrown into the Tiber, but were saved by the river god Tiberinus, who also saved Rhea Silvia and married her. Romulus and Remus were found by a wolf who suckled them. A woodpecker fed them. The brothers were later found by a shepherd, Faustulus, who raised them.
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+ Once they were grown, Romulus and Remus founded the city of Rome. However, the twins had an argument about where to start Rome. Romulus favored the Palatine Hill, but Remus favored the Aventine Hill. They decided to settle the disagreement by asking the gods. Each brother stood on his respective hill. Remus saw six birds fly overhead, and Romulus saw twelve. However, Remus countered that he had seen the birds first. Nonetheless, Romulus started to build a wall around his city. Then, Remus jumped over the wall as an insult to his brother. Angered, Romulus killed Remus. He regretted it, and took Remus to Amulius's palace, and buried him there.
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+ Media related to Romulus and Remus at Wikimedia Commons
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+ The Wikimedia Foundation is a non-profit foundation. Their main headquarters is in San Francisco in the United States. The Wikimedia Foundation runs many projects using the wiki idea and the MediaWiki software. These projects include Wikipedia, Wiktionary, Wikiquote, Wikisource, Wikinews, Wikibooks, Wikiversity, Wikimedia Commons, Wikidata, Wikivoyage, and Meta-Wiki.[7]
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+ There are many other wikis related to the foundation, but these are mostly smaller projects. They include the Wikimedia Foundation wiki, the MediaWiki wiki, the Test Wikipedia, the Wikimedia Incubator, Bugzilla, and the Wikimania wiki.
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+ The foundation's creation was officially announced by Wikipedia co-founder[8][9] Jimmy Wales, who was running Wikipedia within his company Bomis, on June 20, 2003.
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+ The foundation gets most of its funds from donations, as it is nonprofit. It also looks for grants. Some companies have helped Wikimedia by giving free computer hardware, and by hosting servers. Since people can write the wikis, Wikimedia projects are free to use. Funds are used to run computer servers and to pay staff. The Foundation had 160 employees in 2013.
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+ In 2013, Sue Gardner was the executive director.[10]
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+ In 2015, Patricio Lorente was the Chair of the Wikimedia Foundation Board.[11]
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+ In 2016, Katherine Maher became the executive director.
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+ In 2018, María Sefidari is chair of the board.[12]
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+ The Board of Trustees in charge of all the affairs of the Foundation has ten members:
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+ The Signpost reported that two new trustees were elected in 2019:
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+ The Foundation also has an Advisory Board, an international network of experts who have agreed to give the foundation meaningful help on a regular basis in many different areas, including law, organizational development, technology, policy, and outreach.[14]
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+ American football, referred to as football in the United States and Canada and also known as gridiron,[nb 1] is a team sport. It is played by two teams with 11 players on each side. American football is pleyed with a ball with pointed ends. Points are scored in many ways, usually by one team getting the ball into the end zone of the other team. The game started in the late 19th century as college football, an American version of rugby football.
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+ The main leagues that play American football are the professional National Football League (NFL), and the National Collegiate Athletic Association (NCAA), which plays college football. In the National Football League, players can be paid millions of dollars. In the National Collegiate Athletic Association, players simply play for the pride of their school, scholarships, or for the chance to join a national team. Over a million boys (and a number of girls) play high school football. There is also a closely related sport called Canadian football (CFL).
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+ An American football game is played with a ball called a football. The sport is played on a grass (or artificial turf) field. The field is exactly 360 feet (110 m) long and 160 feet (49 m) wide. The end zones, one at each end of the field, are 10 yards (9.1 m) long. The players wear protective equipment, including a helmet with face mask, shoulder pads, thigh pads, and often a mouth guard. A team has four chances, or "downs", to advance the ball 10 yards (9.1 m) while the opposing team tries to stop it. Certain players advance the ball by carrying or throwing it. Teams can score by advancing the ball to the other team's end zone or by kicking the ball through a goalpost placed at the back of the end zone. American football is carefully regulated by time and rules, which are enforced by officials, who also determine when a team scores.
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+ A college or professional football game is 60 minutes long, and is divided into 15-minute quarters. In some high schools, the quarters are 12 minutes long, and games for younger children are often shorter still. After the first two quarters, the teams rest during halftime.
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+ In NFL football, if the game is tied after the four quarters, the two teams compete in at least one more 15-minute period called overtime. During overtime, the first team to score points is usually the winner. However, under the current rules, first used for the 2011 postseason, if the team that has the ball first ends its possession by scoring a field goal, the other team has a chance to score. If that team does not score, or if it scores a touchdown, the game ends. If it scores a field goal, the game continues, and the next team to score wins. During the regular season, only one overtime period is played—if neither team scores, or if both teams score field goals when they first have the ball, the game ends in a tie. During the playoffs, the game will continue with as many overtime periods as needed to decide a winner. If the game is tied after each team has had the ball once in overtime, the first team to score wins.
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+ In NCAA football overtime, which is based on the system used for high school football in most U.S. states, the teams take turns trying to score. The game ends when one team scores, and the other team fails to score as many points during its chance.
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+ American football is played on a field 120 yards (110 m) long by 53.3 yards (48.7 m) wide. Most of the game is played on 100 yards (91 m) in the middle. It is divided by 20 lines drawing every 5 yards (4.6 m). The field has two other sets of markings, running between the two end zones along the length of the field, known as "hashmarks". All plays must start between the hashmarks—if the last play ended outside the hashmarks, the ball is moved to the nearest hashmark. At the ends of the field there are scoring areas, called the end zones.
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+ There are also two yellow poles on the end of each field called uprights. Sometimes, if the team can not score a touchdown they might want to kick it through the uprights for three points. The uprights are also used for scoring one point after a team scored a touchdown.
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+ There are many types of players on a football team. For the offensive part of the team, a quarterback throws the football to wide receivers while offensive linemen block to protect him from defensive players. The offensive linemen also block when a running back runs to advance the football. Players on the Defensive line, a linebacker, and defensive backs (cornerbacks and American football safeties) attempt to tackle the offensive player who carries the football.
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+ Some team members only play during certain times. These players belong to the Special Teams. The kicker can kick the ball to the other team or between the uprights, while the placeholder holds the ball steady. The kick returner runs the ball down the field in an attempt to score points after catching the ball.
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+ A touchdown is achieved when a player has legal possession of the ball and the ball crosses an imaginary vertical plane above the opposing team's goal line. After a touchdown, the scoring team attempts a try for 1 or 2 points (see below). A successful touchdown is signaled by an official extending both arms vertically above the head.
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+ A field goal is scored when the ball is place kicked between the goal posts behind the opponent's end zone. The most common type of kick used is the place kick. For a place kick, the ball must first be snapped to a placeholder, who holds the ball upright on the ground with his fingertip so that it may be kicked. Three points are scored if the ball crosses between the two upright posts and above the crossbar and remains over.
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+ Immediately following a touchdown, the scoring team can attempt to kick the ball between the goal posts for 1 extra point. The team can also run or pass the ball into the end zone for 2 points. This is not done very often although it does happen.
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+ A safety is scored if a player causes the ball to become dead in his own end zone. When this happens two points are awarded to the opposing (usually defending) team. This can happen if a player is either downed or goes out of bounds in the end zone while carrying the ball. It can also happen if he fumbles the ball, and it goes out of bounds in the end zone. A safety is also awarded to the defensive team if the offensive team commits a foul which is enforced in its own end zone.
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+ Exhibition season (better known as Pre-Season) is in August. In the exhibition season, the teams get ready for the regular season by having training. Teams have practices to help the team get better and see who will make the team. All of the teams play 4 games before the regular season starts, and the games do not change what team gets to the post season. Because of it, teams do not use their best players much, and use the games as more practice.
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+ The 32 NFL teams are divided into two conferences: the National Football Conference (NFC) and the American Football Conference (AFC). Each of them is divided in four divisions: North, South, West and East. Each division includes four teams.
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+ The season lasts 17 weeks. Each team plays 16 games and has one week off. This week of rest is called a "bye week".
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+ Football (soccer)
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+ Basketball
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+ Rugby
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+ Gymnastics
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+ Baseball
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+ American football
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+ Cycling·Auto racing
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+ Cricket·Golf
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+ Field hockey·Handball
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+ Archery·Shooting
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+ Fencing·Weightlifting
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+ Pentathlon·Triathlon
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+ Horseback riding
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+ Swimming· Diving
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+ Water polo·Sailing
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+ Canoeing·Rowing
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+
51
+ Boxing·Wrestling
52
+ Karate·Taekwondo
53
+
54
+ Tennis· Volleyball
55
+ Table tennis· Badminton
56
+
57
+ Winter sports
58
+
59
+ Skiing·Curling
60
+ Bobsled·Luge
61
+ Snowboarding·Biathlon
62
+ Ice sledge hockey
63
+
64
+ At the end of the regular season, the winners of each division, and the next two best teams in each conference and the best 6 AFC teams play in a tournament. NFC's champion and AFC's champion play the NFL's final game, the Super Bowl. The event is often treated as a National holiday as many stores close for the event. The day of the event is commonly known nationwide as Super Bowl Sunday.
65
+
66
+ Notes
ensimple/2028.html.txt ADDED
@@ -0,0 +1,49 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ Association football is a sport played between two teams. It was invented in England, and is played in most countries. In the United States and Canada, it is called soccer. In most other countries it is called football. Association football is the most popular sport in the world. [1]
2
+
3
+ There were various attempts to codify the rules of football in England in the mid-19th century. The present laws date from 1863 when a set of rules was adopted in Rugby, Warwickshire by the newly formed Football Association.
4
+
5
+ Each team has 11 players on the field. One of these players is the goalkeeper, and the other ten are known as "outfield players". The game is played by kicking a ball into the opponent's goal. A match has 90 minutes of play, with a break of 15 minutes during the match. The break in the middle is called half-time. Added time may be added after half time or after 90 minutes to make up for time lost during the game because of fouls, free kicks, corner kicks, injuries, bookings, substitutions or any other time the game is stopped. If a match ends in a tie, extra-time with two halves of 15 minutes each may be played, and if there is still a tie, a penalty shootout decides the winner. Sometimes extra-time is skipped and the game goes right into the penalty shootout.
6
+
7
+ Football (soccer)
8
+ Basketball
9
+ Rugby
10
+ Gymnastics
11
+ Baseball
12
+ American football
13
+ Cycling·Auto racing
14
+ Cricket·Golf
15
+ Field hockey·Handball
16
+ Archery·Shooting
17
+ Fencing·Weightlifting
18
+ Pentathlon·Triathlon
19
+ Horseback riding
20
+
21
+ Swimming· Diving
22
+ Water polo·Sailing
23
+ Canoeing·Rowing
24
+
25
+ Boxing·Wrestling
26
+ Karate·Taekwondo
27
+
28
+ Tennis· Volleyball
29
+ Table tennis· Badminton
30
+
31
+ Winter sports
32
+
33
+ Skiing·Curling
34
+ Bobsled·Luge
35
+ Snowboarding·Biathlon
36
+ Ice sledge hockey
37
+
38
+ There are many competitions for football, for both football clubs and countries. Football clubs usually play other teams in their own country, with a few exceptions. Cardiff City F.C. and Swansea City F.C from Wales for example, play in the English leagues and in the English FA Cup. Another exception is also in Major League Soccer, where Vancouver Whitecaps, Toronto FC, and Montreal Impact play although they are from Canada. Football clubs also play other teams in their continent in competitions such as the AFC Champions League and the CAF Champions League.
39
+
40
+ There are 6 associations. These are CONCACAF, CONMEBOL, CAF, UEFA, AFC, and OFC. Each association has their own continental competition between clubs and national teams. Some examples are the Copa América for CONMEBOL national teams and the Copa Libertadores for CONMEBOL clubs. FIFA organises international competitions between worldwide clubs and countries. Clubs play in the Club World Cup, and countries play for the World Cup.
41
+
42
+ The FIFA World Cup takes place every four years between national teams, and is the world's most popular sporting event, even more popular than the Olympic Games.[2] In football, there are two main competition types. In a "league", all of the teams play the same number of games, but in a "cup", teams leave the competition when they lose, until the last two teams play each other to decide the winner.
43
+
44
+ Football is the world's most popular sport. It is played in more countries than any other game. In fact, FIFA (the Federation Internationale de Football Association) has more members than the United Nations. It was originally an all-male sport, but today it is played by both males and females (separately, except sometimes at primary school level).
45
+
46
+ In Europe, the main competitions to compete are the Champions League for the top teams from the top leagues in each country in Europe. Then there is the UEFA Europa League which is for the next best teams from each member country of the UEFA.
47
+
48
+ The most successful club in the world, in terms of domestic league results, is Rangers F.C. from Scotland, who have won more domestic league titles than any other team in the world. They have won the country's league 54 times[3] which is a world record. In May 2000, Rangers became the first team to win 100 trophies.[4][5] Other successful clubs are FC Barcelona and Real Madrid from Spain, Bayern Munich and Borussia Dortmund from Germany, Galatasaray S.K. from Turkey, Juventus and Napoli from Italy, Liverpool and Manchester City from England, and Paris Saint-Germain from France.
49
+
ensimple/2029.html.txt ADDED
@@ -0,0 +1,49 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ Association football is a sport played between two teams. It was invented in England, and is played in most countries. In the United States and Canada, it is called soccer. In most other countries it is called football. Association football is the most popular sport in the world. [1]
2
+
3
+ There were various attempts to codify the rules of football in England in the mid-19th century. The present laws date from 1863 when a set of rules was adopted in Rugby, Warwickshire by the newly formed Football Association.
4
+
5
+ Each team has 11 players on the field. One of these players is the goalkeeper, and the other ten are known as "outfield players". The game is played by kicking a ball into the opponent's goal. A match has 90 minutes of play, with a break of 15 minutes during the match. The break in the middle is called half-time. Added time may be added after half time or after 90 minutes to make up for time lost during the game because of fouls, free kicks, corner kicks, injuries, bookings, substitutions or any other time the game is stopped. If a match ends in a tie, extra-time with two halves of 15 minutes each may be played, and if there is still a tie, a penalty shootout decides the winner. Sometimes extra-time is skipped and the game goes right into the penalty shootout.
6
+
7
+ Football (soccer)
8
+ Basketball
9
+ Rugby
10
+ Gymnastics
11
+ Baseball
12
+ American football
13
+ Cycling·Auto racing
14
+ Cricket·Golf
15
+ Field hockey·Handball
16
+ Archery·Shooting
17
+ Fencing·Weightlifting
18
+ Pentathlon·Triathlon
19
+ Horseback riding
20
+
21
+ Swimming· Diving
22
+ Water polo·Sailing
23
+ Canoeing·Rowing
24
+
25
+ Boxing·Wrestling
26
+ Karate·Taekwondo
27
+
28
+ Tennis· Volleyball
29
+ Table tennis· Badminton
30
+
31
+ Winter sports
32
+
33
+ Skiing·Curling
34
+ Bobsled·Luge
35
+ Snowboarding·Biathlon
36
+ Ice sledge hockey
37
+
38
+ There are many competitions for football, for both football clubs and countries. Football clubs usually play other teams in their own country, with a few exceptions. Cardiff City F.C. and Swansea City F.C from Wales for example, play in the English leagues and in the English FA Cup. Another exception is also in Major League Soccer, where Vancouver Whitecaps, Toronto FC, and Montreal Impact play although they are from Canada. Football clubs also play other teams in their continent in competitions such as the AFC Champions League and the CAF Champions League.
39
+
40
+ There are 6 associations. These are CONCACAF, CONMEBOL, CAF, UEFA, AFC, and OFC. Each association has their own continental competition between clubs and national teams. Some examples are the Copa América for CONMEBOL national teams and the Copa Libertadores for CONMEBOL clubs. FIFA organises international competitions between worldwide clubs and countries. Clubs play in the Club World Cup, and countries play for the World Cup.
41
+
42
+ The FIFA World Cup takes place every four years between national teams, and is the world's most popular sporting event, even more popular than the Olympic Games.[2] In football, there are two main competition types. In a "league", all of the teams play the same number of games, but in a "cup", teams leave the competition when they lose, until the last two teams play each other to decide the winner.
43
+
44
+ Football is the world's most popular sport. It is played in more countries than any other game. In fact, FIFA (the Federation Internationale de Football Association) has more members than the United Nations. It was originally an all-male sport, but today it is played by both males and females (separately, except sometimes at primary school level).
45
+
46
+ In Europe, the main competitions to compete are the Champions League for the top teams from the top leagues in each country in Europe. Then there is the UEFA Europa League which is for the next best teams from each member country of the UEFA.
47
+
48
+ The most successful club in the world, in terms of domestic league results, is Rangers F.C. from Scotland, who have won more domestic league titles than any other team in the world. They have won the country's league 54 times[3] which is a world record. In May 2000, Rangers became the first team to win 100 trophies.[4][5] Other successful clubs are FC Barcelona and Real Madrid from Spain, Bayern Munich and Borussia Dortmund from Germany, Galatasaray S.K. from Turkey, Juventus and Napoli from Italy, Liverpool and Manchester City from England, and Paris Saint-Germain from France.
49
+
ensimple/203.html.txt ADDED
@@ -0,0 +1,25 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ Love is a mix of feelings and actions that shows a deep liking for someone or something. Romantic love can lead to things such as dating, marriage and sex, but a person can also feel for friends, such as platonic love, or family.
2
+ There are also chemical reactions within the brain that can be triggered by the different types of love.
3
+
4
+ There are many kinds of love. There can be self-love, love towards a friend (such as platonic love), love in romance, towards family, toward God, or towards an object or idea.
5
+ One of the most common forms of love is Arely and Elijah’s.
6
+ Often love can be confused with other feelings. Being sexually or physically attracted is the feeling of lust. Lust and love may be thought of as different. Normal friendship is a form of love that can be distracted by lust and misunderstanding.
7
+
8
+ A heart is a well-known symbol of love.
9
+
10
+ Floral decoration for love
11
+
12
+ The First Kiss of Adam and Eve, Eden.
13
+
14
+ Love symbol in tree of Yercaud
15
+
16
+ People describe the person that they first loved romantically as their "first love." For example, in William Shakespeare's Romeo and Juliet, Romeo is Juliet's very first love. At that time, she was only 13. In Maria Edgeworth's book Belinda, Mr. Vincent says, "First loves are silly things."
17
+
18
+ The biological model of lust is different from love because it is more like hunger or thirst.[1] Helen Fisher, an expert in the topic of romantic love, divides it into three stages: lust, attraction, and attachment. Lust makes people like each other, attraction encourages people to focus on mating, and attachment helps people tolerate the spouse (or the child).
19
+
20
+ Lust is the passionate sexual desire that promotes mating. This usually lasts only a few weeks or months. Attraction is more for one person specially. Recent studies in neuroscience say that as people fall in love, the brain releases chemicals, including dopamine. These chemicals make people less hungry and sleepy, and also adds an intense feeling of excitement. Research shows that this stage normally lasts from one and a half to three years.[2]
21
+
22
+ Since these lust and attraction stages are both described as temporary, a third stage might describe long-term love. Attachment can be used to describe the bonding period that helps keep husband and wife together for many years. Attachment occurs in the longer term.
23
+
24
+ Love has consequences for health and well-being. Joyful activities such as love activate areas in the brain responsible for emotion, attention,
25
+ motivation and memory, and it may further lead to reduction of cortisol, which reduces stress.[3] Some people usually do not feel love. They are called alexithymics or aromonatics.[4]
ensimple/2030.html.txt ADDED
@@ -0,0 +1,49 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ Association football is a sport played between two teams. It was invented in England, and is played in most countries. In the United States and Canada, it is called soccer. In most other countries it is called football. Association football is the most popular sport in the world. [1]
2
+
3
+ There were various attempts to codify the rules of football in England in the mid-19th century. The present laws date from 1863 when a set of rules was adopted in Rugby, Warwickshire by the newly formed Football Association.
4
+
5
+ Each team has 11 players on the field. One of these players is the goalkeeper, and the other ten are known as "outfield players". The game is played by kicking a ball into the opponent's goal. A match has 90 minutes of play, with a break of 15 minutes during the match. The break in the middle is called half-time. Added time may be added after half time or after 90 minutes to make up for time lost during the game because of fouls, free kicks, corner kicks, injuries, bookings, substitutions or any other time the game is stopped. If a match ends in a tie, extra-time with two halves of 15 minutes each may be played, and if there is still a tie, a penalty shootout decides the winner. Sometimes extra-time is skipped and the game goes right into the penalty shootout.
6
+
7
+ Football (soccer)
8
+ Basketball
9
+ Rugby
10
+ Gymnastics
11
+ Baseball
12
+ American football
13
+ Cycling·Auto racing
14
+ Cricket·Golf
15
+ Field hockey·Handball
16
+ Archery·Shooting
17
+ Fencing·Weightlifting
18
+ Pentathlon·Triathlon
19
+ Horseback riding
20
+
21
+ Swimming· Diving
22
+ Water polo·Sailing
23
+ Canoeing·Rowing
24
+
25
+ Boxing·Wrestling
26
+ Karate·Taekwondo
27
+
28
+ Tennis· Volleyball
29
+ Table tennis· Badminton
30
+
31
+ Winter sports
32
+
33
+ Skiing·Curling
34
+ Bobsled·Luge
35
+ Snowboarding·Biathlon
36
+ Ice sledge hockey
37
+
38
+ There are many competitions for football, for both football clubs and countries. Football clubs usually play other teams in their own country, with a few exceptions. Cardiff City F.C. and Swansea City F.C from Wales for example, play in the English leagues and in the English FA Cup. Another exception is also in Major League Soccer, where Vancouver Whitecaps, Toronto FC, and Montreal Impact play although they are from Canada. Football clubs also play other teams in their continent in competitions such as the AFC Champions League and the CAF Champions League.
39
+
40
+ There are 6 associations. These are CONCACAF, CONMEBOL, CAF, UEFA, AFC, and OFC. Each association has their own continental competition between clubs and national teams. Some examples are the Copa América for CONMEBOL national teams and the Copa Libertadores for CONMEBOL clubs. FIFA organises international competitions between worldwide clubs and countries. Clubs play in the Club World Cup, and countries play for the World Cup.
41
+
42
+ The FIFA World Cup takes place every four years between national teams, and is the world's most popular sporting event, even more popular than the Olympic Games.[2] In football, there are two main competition types. In a "league", all of the teams play the same number of games, but in a "cup", teams leave the competition when they lose, until the last two teams play each other to decide the winner.
43
+
44
+ Football is the world's most popular sport. It is played in more countries than any other game. In fact, FIFA (the Federation Internationale de Football Association) has more members than the United Nations. It was originally an all-male sport, but today it is played by both males and females (separately, except sometimes at primary school level).
45
+
46
+ In Europe, the main competitions to compete are the Champions League for the top teams from the top leagues in each country in Europe. Then there is the UEFA Europa League which is for the next best teams from each member country of the UEFA.
47
+
48
+ The most successful club in the world, in terms of domestic league results, is Rangers F.C. from Scotland, who have won more domestic league titles than any other team in the world. They have won the country's league 54 times[3] which is a world record. In May 2000, Rangers became the first team to win 100 trophies.[4][5] Other successful clubs are FC Barcelona and Real Madrid from Spain, Bayern Munich and Borussia Dortmund from Germany, Galatasaray S.K. from Turkey, Juventus and Napoli from Italy, Liverpool and Manchester City from England, and Paris Saint-Germain from France.
49
+
ensimple/2031.html.txt ADDED
@@ -0,0 +1,49 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ Association football is a sport played between two teams. It was invented in England, and is played in most countries. In the United States and Canada, it is called soccer. In most other countries it is called football. Association football is the most popular sport in the world. [1]
2
+
3
+ There were various attempts to codify the rules of football in England in the mid-19th century. The present laws date from 1863 when a set of rules was adopted in Rugby, Warwickshire by the newly formed Football Association.
4
+
5
+ Each team has 11 players on the field. One of these players is the goalkeeper, and the other ten are known as "outfield players". The game is played by kicking a ball into the opponent's goal. A match has 90 minutes of play, with a break of 15 minutes during the match. The break in the middle is called half-time. Added time may be added after half time or after 90 minutes to make up for time lost during the game because of fouls, free kicks, corner kicks, injuries, bookings, substitutions or any other time the game is stopped. If a match ends in a tie, extra-time with two halves of 15 minutes each may be played, and if there is still a tie, a penalty shootout decides the winner. Sometimes extra-time is skipped and the game goes right into the penalty shootout.
6
+
7
+ Football (soccer)
8
+ Basketball
9
+ Rugby
10
+ Gymnastics
11
+ Baseball
12
+ American football
13
+ Cycling·Auto racing
14
+ Cricket·Golf
15
+ Field hockey·Handball
16
+ Archery·Shooting
17
+ Fencing·Weightlifting
18
+ Pentathlon·Triathlon
19
+ Horseback riding
20
+
21
+ Swimming· Diving
22
+ Water polo·Sailing
23
+ Canoeing·Rowing
24
+
25
+ Boxing·Wrestling
26
+ Karate·Taekwondo
27
+
28
+ Tennis· Volleyball
29
+ Table tennis· Badminton
30
+
31
+ Winter sports
32
+
33
+ Skiing·Curling
34
+ Bobsled·Luge
35
+ Snowboarding·Biathlon
36
+ Ice sledge hockey
37
+
38
+ There are many competitions for football, for both football clubs and countries. Football clubs usually play other teams in their own country, with a few exceptions. Cardiff City F.C. and Swansea City F.C from Wales for example, play in the English leagues and in the English FA Cup. Another exception is also in Major League Soccer, where Vancouver Whitecaps, Toronto FC, and Montreal Impact play although they are from Canada. Football clubs also play other teams in their continent in competitions such as the AFC Champions League and the CAF Champions League.
39
+
40
+ There are 6 associations. These are CONCACAF, CONMEBOL, CAF, UEFA, AFC, and OFC. Each association has their own continental competition between clubs and national teams. Some examples are the Copa América for CONMEBOL national teams and the Copa Libertadores for CONMEBOL clubs. FIFA organises international competitions between worldwide clubs and countries. Clubs play in the Club World Cup, and countries play for the World Cup.
41
+
42
+ The FIFA World Cup takes place every four years between national teams, and is the world's most popular sporting event, even more popular than the Olympic Games.[2] In football, there are two main competition types. In a "league", all of the teams play the same number of games, but in a "cup", teams leave the competition when they lose, until the last two teams play each other to decide the winner.
43
+
44
+ Football is the world's most popular sport. It is played in more countries than any other game. In fact, FIFA (the Federation Internationale de Football Association) has more members than the United Nations. It was originally an all-male sport, but today it is played by both males and females (separately, except sometimes at primary school level).
45
+
46
+ In Europe, the main competitions to compete are the Champions League for the top teams from the top leagues in each country in Europe. Then there is the UEFA Europa League which is for the next best teams from each member country of the UEFA.
47
+
48
+ The most successful club in the world, in terms of domestic league results, is Rangers F.C. from Scotland, who have won more domestic league titles than any other team in the world. They have won the country's league 54 times[3] which is a world record. In May 2000, Rangers became the first team to win 100 trophies.[4][5] Other successful clubs are FC Barcelona and Real Madrid from Spain, Bayern Munich and Borussia Dortmund from Germany, Galatasaray S.K. from Turkey, Juventus and Napoli from Italy, Liverpool and Manchester City from England, and Paris Saint-Germain from France.
49
+
ensimple/2032.html.txt ADDED
@@ -0,0 +1,51 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ Gravity, or gravitation is one of the fundamental forces of the universe. In this article, we discuss it in three parts:
2
+
3
+ Some physicists think gravity is caused by gravitons, but they are still unsure.
4
+
5
+ In everyday talk, we say things fall because the Earth's gravity pulls on them. We talk as if our weight was a "given". Actually, weight changes when the pull of gravity changes. The Moon is much smaller and the pull of gravity on the Moon is about 1/6th that of Earth. So any object on the Moon weighs 1/6th of its weight on Earth. What does not change is the amount of matter in an object. That is called conservation of mass. On Earth, mass and weight are the same for most purposes, though a sensitive gravimeter can detect the difference. The difference can be very different on another world such as the Moon.
6
+
7
+ From this we learn two things.
8
+
9
+ The Earth has mass. Every particle of matter has mass. So the Earth pulls on every object and person, and they pull on the Earth. This pulling force is called "gravity" and it gives weight.
10
+
11
+ These words mean almost the same thing in everyday use. Sometimes scientists use "gravity" for the force that pulls objects towards each other, and "gravitation" for the theory about the attraction.
12
+
13
+ According to one of his students, Galileo did a famous experiment about gravity where he dropped balls from the Tower of Pisa. He later rolled balls down inclines. With these experiments, Galileo showed that gravitation accelerates all objects at the same rate regardless of weight.
14
+
15
+ Johannes Kepler studied the motion of planets. In 1609 and 1616 he published his three laws governing the shape of their orbits and their speed along those orbits, but did not discover why they moved that way.
16
+
17
+ In 1687, English mathematician Isaac Newton wrote the Principia. In this book, he wrote about the inverse-square law of gravitation. Newton, following an idea that had long been discussed by others, said that the closer two objects are to each other, the more gravity will affect them.
18
+
19
+ Newton's laws were used later to predict the existence of the planet Neptune based on changes in the orbit of Uranus, and again to predict the existence of another planet closer to the Sun than Mercury. When this was done, it was learned that his theory was not entirely correct. These mistakes in his theory were corrected by Albert Einstein's theory of General Relativity. Newton's theory is still commonly used for many things because it is simpler and is accurate enough for many uses.
20
+
21
+ Why does the Earth not fall into the Sun? The answer is simple but very important. It is because the Earth moving round the Sun is in a dynamic equilibrium. The speed of the Earth's movement creates a centrifugal force which balances the gravitational force between the Sun and the Earth. Why does the Earth continue spinning? Because there is no force to stop it.
22
+
23
+ Newton's first law: "If a body is at rest it remains at rest or if it is in motion it moves at the same speed until it is acted on by an external force".[1]
24
+
25
+ There is a kind of analogy between centrifugal force and gravitational force, which led to the "equivalence principle" of general relativity.[2][3]
26
+
27
+ In free fall an object's motion balances out the pull of gravity on it. This includes being in orbit.
28
+
29
+ The special theory of relativity describes systems where gravity is not an issue; by contrast, gravity is the central issue of the general theory of relativity.[4]
30
+
31
+ In general relativity there is no gravitational force deflecting objects from their natural, straight paths. Instead, gravity is seen as changes in the properties of space and time. In turn, this changes the straightest-possible paths that objects will naturally follow.[5] The curvature is, in turn, caused by the energy–momentum of matter. Spacetime tells matter how to move; matter tells spacetime how to curve.[6]
32
+
33
+ For weak gravitational fields and slow speeds relative to the speed of light, the theory's predictions converge on those of Newton's law of universal gravitation.[7] Newton's equations are used to plan journeys in our Solar System.
34
+
35
+ General relativity has a number of physical consequences.
36
+
37
+ Gravity influences the passage of time. Light sent down into a gravity well is blueshifted, whereas light sent in the opposite direction (i.e., climbing out of the gravity well) is redshifted; collectively, these two effects are known as the gravitational frequency shift.
38
+
39
+ More generally, processes close to a massive body run more slowly when compared with processes taking place farther away; this effect is known as gravitational time dilation.[8][9]
40
+
41
+ General relativity predicts that the path of light is bent in a gravitational field; light passing a massive body is deflected towards that body. This effect has been confirmed by observing the light of stars or distant quasars being deflected as it passes the Sun.[10]
42
+
43
+ Closely related to light deflection is the gravitational time delay (or Shapiro delay), the phenomenon that light signals take longer to move through a gravitational field than they would in the absence of that field. There have been numerous successful tests of this prediction.[11][12]
44
+
45
+ A parameter called γ encodes the influence of gravity on the geometry of space.[13]
46
+
47
+ Gravitational waves are ripples in the curvature of spacetime. They move as a wave, travelling outward from the source. Einstein predicted them in 1915 on the basis of his theory of general relativity.[14] In theory, gravitational waves transport energy as gravitational radiation. Sources of detectable gravitational waves might include binary star systems composed of white dwarfs, neutron stars, or black holes. In general relativity, gravitational waves cannot travel faster than the speed of light.
48
+
49
+ The 1993 Nobel Prize in Physics was awarded for measurements of the Hulse-Taylor binary star system. These measurements suggested gravitational waves are more than mathematical peculiarities.
50
+
51
+ On February 11, 2016, the LIGO Scientific Collaboration and Virgo Collaboration teams announced that they had made the first observation of gravitational waves, originating from a pair of merging black holes using the Advanced LIGO detectors. On June 15, 2016, a second detection of gravitational waves from coalescing black holes was announced. Besides LIGO, many other gravitational-wave observatories (detectors) are under construction.
ensimple/2033.html.txt ADDED
@@ -0,0 +1,174 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ In physics, a force is an interaction between objects. It is called an interaction because if one object acts on another, its action is matched by a reaction from the other object.[1] This idea is known as Newton's third law[2], where action and reaction are "equal and opposite" [3] (matched).
2
+ The objects are just the things the force acts between. Different forces act between different sorts of object. For example, gravity acts between objects with mass, like the sun and the earth. Another example is electromagnetic force, which acts between objects with charge, like an electron and the nucleus of an atom. Gravity and electromagnetic force are two examples of forces.
3
+
4
+ A force changes the state of an object (some physical quantity changes) or, strictly, the states of two objects, since the force is an interaction. For example, a force causes an affected object to be pushed or pulled in a certain direction. This changes the object's momentum. Forces cause objects to accelerate, add to the object's overall pressure, change direction, or change shape. The strength of a force is measured in Newtons (N). There are four fundamental forces in physics.
5
+
6
+ A force is always a push, pull, or a twist, and it affects objects by pushing them up, pulling them down, pushing them to a side, or by changing their motion or shape in some other way.
7
+
8
+
9
+
10
+ According to Newton's Second Law of Motion, the formula for finding force is:
11
+
12
+ where
13
+
14
+
15
+
16
+ F
17
+
18
+
19
+ {\displaystyle F}
20
+
21
+ is the force,
22
+
23
+
24
+
25
+
26
+ m
27
+
28
+
29
+ {\displaystyle m}
30
+
31
+ is the mass of an object,
32
+ and
33
+
34
+
35
+
36
+ a
37
+
38
+
39
+ {\displaystyle a}
40
+
41
+ is the acceleration of the object.
42
+
43
+ This formula says that when there is a force on an object then it will move faster and faster.
44
+ If the force is weak and the object is heavy, then it will take a long time to increase the speed very much,
45
+ but if the force is strong and the object is light, then it will move a lot faster very quickly.
46
+
47
+ Gravity is an acceleration. Everything that has a mass is being pulled toward the Earth because of that acceleration. This pull is a force called weight.
48
+
49
+ One can take the equation above and change
50
+
51
+
52
+
53
+ a
54
+
55
+
56
+ {\displaystyle a}
57
+
58
+ to the standard gravity g, then a formula about the gravity on earth can be found:
59
+
60
+ where
61
+
62
+
63
+
64
+ W
65
+
66
+
67
+ {\displaystyle W}
68
+
69
+ is the weight of an object,
70
+
71
+
72
+
73
+
74
+ m
75
+
76
+
77
+ {\displaystyle m}
78
+
79
+ is the mass of an object,
80
+ and
81
+
82
+
83
+
84
+ g
85
+
86
+
87
+ {\displaystyle g}
88
+
89
+ is the acceleration due to gravity at sea level. It is about
90
+
91
+
92
+
93
+ 9.8
94
+ m
95
+
96
+ /
97
+
98
+
99
+ s
100
+
101
+ 2
102
+
103
+
104
+
105
+
106
+ {\displaystyle 9.8m/s^{2}}
107
+
108
+ .
109
+
110
+ This formula says that when you know the mass of an object, then you can calculate how much force there is on the object because of gravity.
111
+ You must be on earth to use this formula. If you are on the moon or another planet, then you can use the formula but g will be different.
112
+
113
+ Force is a vector, so it can be stronger or weaker and it can also point in different directions.
114
+ Gravity always points down into the ground (if you are not in space).
115
+
116
+ Another equation that says something about gravity is:
117
+
118
+ F
119
+
120
+
121
+ {\displaystyle F}
122
+
123
+ is force;
124
+
125
+
126
+
127
+ G
128
+
129
+
130
+ {\displaystyle G}
131
+
132
+ is the gravitational constant, which is used to show how gravity accelerates an object;
133
+
134
+
135
+
136
+
137
+ m
138
+
139
+ 1
140
+
141
+
142
+
143
+
144
+ {\displaystyle m_{1}}
145
+
146
+ is the mass of one object;
147
+
148
+
149
+
150
+
151
+ m
152
+
153
+ 2
154
+
155
+
156
+
157
+
158
+ {\displaystyle m_{2}}
159
+
160
+ is the mass of the second object; and
161
+
162
+
163
+
164
+ d
165
+
166
+
167
+ {\displaystyle d}
168
+
169
+ is the distance between the objects.
170
+
171
+ This equation is used to calculate how the earth moves around the sun and how the moon moves around the earth. It is also used to calculate how other planets, stars and objects in space move around.
172
+
173
+ The equation says that if two objects are very heavy then there is a strong force between them because of gravity.
174
+ If they are very far apart then the force is weaker.
ensimple/2034.html.txt ADDED
@@ -0,0 +1,174 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ In physics, a force is an interaction between objects. It is called an interaction because if one object acts on another, its action is matched by a reaction from the other object.[1] This idea is known as Newton's third law[2], where action and reaction are "equal and opposite" [3] (matched).
2
+ The objects are just the things the force acts between. Different forces act between different sorts of object. For example, gravity acts between objects with mass, like the sun and the earth. Another example is electromagnetic force, which acts between objects with charge, like an electron and the nucleus of an atom. Gravity and electromagnetic force are two examples of forces.
3
+
4
+ A force changes the state of an object (some physical quantity changes) or, strictly, the states of two objects, since the force is an interaction. For example, a force causes an affected object to be pushed or pulled in a certain direction. This changes the object's momentum. Forces cause objects to accelerate, add to the object's overall pressure, change direction, or change shape. The strength of a force is measured in Newtons (N). There are four fundamental forces in physics.
5
+
6
+ A force is always a push, pull, or a twist, and it affects objects by pushing them up, pulling them down, pushing them to a side, or by changing their motion or shape in some other way.
7
+
8
+
9
+
10
+ According to Newton's Second Law of Motion, the formula for finding force is:
11
+
12
+ where
13
+
14
+
15
+
16
+ F
17
+
18
+
19
+ {\displaystyle F}
20
+
21
+ is the force,
22
+
23
+
24
+
25
+
26
+ m
27
+
28
+
29
+ {\displaystyle m}
30
+
31
+ is the mass of an object,
32
+ and
33
+
34
+
35
+
36
+ a
37
+
38
+
39
+ {\displaystyle a}
40
+
41
+ is the acceleration of the object.
42
+
43
+ This formula says that when there is a force on an object then it will move faster and faster.
44
+ If the force is weak and the object is heavy, then it will take a long time to increase the speed very much,
45
+ but if the force is strong and the object is light, then it will move a lot faster very quickly.
46
+
47
+ Gravity is an acceleration. Everything that has a mass is being pulled toward the Earth because of that acceleration. This pull is a force called weight.
48
+
49
+ One can take the equation above and change
50
+
51
+
52
+
53
+ a
54
+
55
+
56
+ {\displaystyle a}
57
+
58
+ to the standard gravity g, then a formula about the gravity on earth can be found:
59
+
60
+ where
61
+
62
+
63
+
64
+ W
65
+
66
+
67
+ {\displaystyle W}
68
+
69
+ is the weight of an object,
70
+
71
+
72
+
73
+
74
+ m
75
+
76
+
77
+ {\displaystyle m}
78
+
79
+ is the mass of an object,
80
+ and
81
+
82
+
83
+
84
+ g
85
+
86
+
87
+ {\displaystyle g}
88
+
89
+ is the acceleration due to gravity at sea level. It is about
90
+
91
+
92
+
93
+ 9.8
94
+ m
95
+
96
+ /
97
+
98
+
99
+ s
100
+
101
+ 2
102
+
103
+
104
+
105
+
106
+ {\displaystyle 9.8m/s^{2}}
107
+
108
+ .
109
+
110
+ This formula says that when you know the mass of an object, then you can calculate how much force there is on the object because of gravity.
111
+ You must be on earth to use this formula. If you are on the moon or another planet, then you can use the formula but g will be different.
112
+
113
+ Force is a vector, so it can be stronger or weaker and it can also point in different directions.
114
+ Gravity always points down into the ground (if you are not in space).
115
+
116
+ Another equation that says something about gravity is:
117
+
118
+ F
119
+
120
+
121
+ {\displaystyle F}
122
+
123
+ is force;
124
+
125
+
126
+
127
+ G
128
+
129
+
130
+ {\displaystyle G}
131
+
132
+ is the gravitational constant, which is used to show how gravity accelerates an object;
133
+
134
+
135
+
136
+
137
+ m
138
+
139
+ 1
140
+
141
+
142
+
143
+
144
+ {\displaystyle m_{1}}
145
+
146
+ is the mass of one object;
147
+
148
+
149
+
150
+
151
+ m
152
+
153
+ 2
154
+
155
+
156
+
157
+
158
+ {\displaystyle m_{2}}
159
+
160
+ is the mass of the second object; and
161
+
162
+
163
+
164
+ d
165
+
166
+
167
+ {\displaystyle d}
168
+
169
+ is the distance between the objects.
170
+
171
+ This equation is used to calculate how the earth moves around the sun and how the moon moves around the earth. It is also used to calculate how other planets, stars and objects in space move around.
172
+
173
+ The equation says that if two objects are very heavy then there is a strong force between them because of gravity.
174
+ If they are very far apart then the force is weaker.
ensimple/2035.html.txt ADDED
@@ -0,0 +1,31 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ Police are a group of people whose job is to enforce laws, help with emergencies, solve crimes and protect property. A person who carries out this duty is known as a police officer. They work out of a police station. Police are trained in first aid and rescue, because police officers are often one of the first people to get to a place where people are sick or injured, such as a car accident, or a fire.
2
+
3
+ A police agency may be called a police force, police department, police service, constabulary, civil guard or protective service. A gendarmerie is a police force that is part of the military, although its members rarely do actual military work.
4
+
5
+ Most police forces in the United States name themselves as "[Place] Police Department", such as New York City Police Department. State police forces are usually known as either "[State] Highway Patrol" or "[State] State Police". In the United Kingdom, most are "[Place] Police" or "[Place] Constabulary". In Canada and other English-speaking countries, "[Place] Police Service" is common. Ireland's police are called the Garda Síochána.
6
+
7
+ A law enforcement agency is any agency that enforces the law. In the United States, there are some law enforcement agencies that are not called police forces but carry out similar work, such as the Federal Bureau of Investigations. One common type is a sheriff's office (also sheriff's department), an agency that is led by a sheriff.
8
+
9
+ Those who carry out policing duties are known as police officers. They may also be known as policemen (men only), policewomen (women only), peace officers, constables, rangers or civil guards. In a sheriff's office, they are known as sheriff's deputies or deputies for short. In Ireland they are known by the Irish language word gardaí (garda if singular) or as guards.
10
+
11
+ The police have different powers to help them do their job. These powers are different in different countries. Most police officers have the power to arrest people, search people, and search houses/properties. They sometimes carry equipment such as guns, batons, tasers, or pepper spray. The area where police officers can use these powers is called their jurisdiction. If officers are outside of their jurisdiction, another police force with jurisdiction can then use their powers.
12
+
13
+ The police deal with:
14
+
15
+ Most police departments have officers in two main groups: a "patrol" group with officers who wear uniforms, and a "detective" group with officers who wear normal clothing.
16
+
17
+ Not all countries use the same words to describe these groups. In the United Kingdom, for example, patrol officers form the "uniform branch", while detectives work within the CID ("Criminal Investigation Department"). Also in the United Kingdom, not all police officers are armed, these police officers form an "Armed Response Unit" which comes under other names in different constabularies, in the Metropolitan Police Service, it falls under SFC (Specialist Firearms Command) which all MET Armed Police fall under
18
+
19
+ Police uniforms, equipment and methods vary depending on the country. In some places, groups of police train for special jobs such as dealing with riots or dealing with highly dangerous criminals.
20
+
21
+ Different countries have different ways of organizing their police. Some countries like South Africa, Ireland and New Zealand have just one police force. Other countries have more than one. France has two police forces, one for cities and another for rural areas. Chile also has two, one for patrol and another for investigations.
22
+
23
+ Some countries have two or more levels of police forces. For example, most policing in Australia is carried out by the six state police forces, but there is also the Australian Federal Police who police the whole country. Germany has a similar system. The United Kingdom and Switzerland have many local police forces and several national agencies, but no actual national police force. In Canada, local governments can choose to either run their own police force or give the job to a bigger one. So most Canadian cities have their own police, while most rural areas are policed by the Royal Canadian Mounted Police, which is also the national police.
24
+
25
+ The United States has over 17,000 law enforcement agencies. Many areas have four levels of law enforcement agencies. For example, Los Angeles has the Los Angeles Police Department but there are many other agencies that can work in the city. This includes the county-level Los Angeles Sheriff's Department, the state-level California Highway Patrol and over 100 federal (or national) law enforcement agencies.
26
+
27
+ Worldwide, police are a small percentage of the number of people they serve. On average there are 303.3 police officers per 100,000 people.[1]
28
+
29
+ In most countries, police officers carry guns during their normal duties. In the United Kingdom, New Zealand, Ireland and a few other countries, most police officers do not carry guns.
30
+
31
+ Officers communicate using radio devices. The radios can be on both the uniform and in the patrol vehicle.
ensimple/2036.html.txt ADDED
@@ -0,0 +1,32 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ The Amazon rainforest is the largest forest. It grows in the tropical basin of the Amazon River.
2
+
3
+ The forest lies in a basin drained largely by the Amazon River, with 1100 tributaries. It is a moist broadleaf forest which covers seven million square kilometers (1.7 billion acres). Of this, five and a half million square kilometers (1.4 billion acres) are covered by the rainforest.
4
+
5
+ This region includes territory belonging to nine nations. Most of the forest is in Brazil, with 60% of the rainforest, followed by Peru with 13%, and Colombia with 10%. Venezuela, Ecuador, Bolivia, Guyana, Suriname and French Guiana have just a small amount of rainforest.[1]
6
+
7
+ The Amazon has over half of the planet's remaining rainforests. It is the largest and most species-rich tract of tropical rainforest in the world. The forest was formed at least 55 million years ago, in the Eocene period.
8
+
9
+ Wet tropical forests are the most species-rich biome. Tropical forests in the Americas have more species than African and Asian wet forests.
10
+
11
+ More than one-third of all species in the world live in the Amazon rainforest.[2] It is the richest tropical forest in the world in terms of biodiversity.
12
+
13
+ The region is home to ~2.5 million insect species, tens of thousands of species of plants, and some 2000 species of birds and mammals and a similar number of fish.[3] The diversity of plant species is the highest on earth with some experts estimating that one square kilometre may contain over 75,000 types of trees and 150,000 species of higher plants.[4] One square kilometre of Amazon rainforest can have about 90,000 tons of living plants. This is the largest collection of living plants and animal species in the world. One in five of all the birds in the world live here. To date, an estimated 438,000 species of plants of economic and social interest have been registered in the region with many more remaining to be discovered or cataloged.
14
+
15
+ More than one fifth of the Amazon rainforest has already been destroyed. The forest which remains is threatened. People who care for the environment warn about the loss of biodiversity. They also point out that releasing the carbon which is stored in the trees will increase global warming.
16
+
17
+ Environmentalists are concerned about loss of biodiversity due to the destruction of the forest, and about the release of the carbon in the vegetation, which would accelerate global warming. Amazonian evergreen forests account for about 10% of the world's productivity on land and 10% of the carbon stores in ecosystems[5]—of the order of 1.1 × 1011 metric tonnes of carbon.[6] Amazonian forests are estimated to have accumulated 0.62 ± 0.37 tons of carbon per hectare per year between 1975 and 1996.[6]
18
+
19
+ Some people have calculated that it may even pay to save the forest. They said that one hectare of Amazonian forest in Peru is worth about US $6280, if it is used to harvest fruits, latex and timber (wood). If all the wood is cut down for timber, it has a value of about US $1000. Obviously, this can only be done once; it is not sustainable. When the forest has been cleared, the hectar of land can be used as a pasture, and is worth about US $148. Not all people agree on the study; some have questioned the assumptions behind it.
20
+
21
+ The Brazilian Air Force has been using surveillance aircraft to monitor the forest. At a conference in 2004, scientists warned that the rainforest will no longer be able to absorb the millions of tons of greenhouse gases annually, as it usually does, because of the increased speed of rainforest destruction.
22
+
23
+ 9,169 square miles of rain forest were cut down in 2003 alone. In Brazil alone, European colonists have destroyed more than 90 indigenous tribes since the 1900s.[source?] With them have gone centuries of knowledge of the medicinal value of rainforest species. As their homelands continue to be destroyed by deforestation, rainforest peoples are also disappearing.
24
+
25
+ Once the process of vulcanization was invented, companies began to make many kinds of new rubber products, such as boots and seals for machines. American and European companies began buying large amounts of latex from Brazil. This boom in Brazilian rubber began around 1870, but the need for automobile tires brought the greatest wealth to the new rubber producers.[7]
26
+
27
+ Other rain forest had rubber trees, but Amazonia had by far the best. However, the trees could not be farmed on plantations because if they were next to each other, the insects would eat them. Therefore, people had to find the trees in the rain forest, cut slits in them, leave cups to collect the latex, and come back later to get it.[7]
28
+ Thousands of people moved to the rain forest to work collecting rubber. Most of these people were hired by rich rubber merchants. The rubber merchants loaned them money to come down the river and buy tools. Each merchant’s collectors had to sell the rubber only to their rubber merchant at low prices and buy supplies only from them at high prices. That meant the collectors were always in debt to their merchant and could not leave to do something else. The rubber merchants quickly became very rich.
29
+
30
+ The center of the rubber trade was Manaus on the Rio Negro.[7] It became first a boom town and then a beautiful, wealthy city. It had electricity before most of the cities in the United States did.[7] The newly rich merchants built huge expensive homes and brought in automobiles to travel on the city’s few roads. They built a magnificent opera house with crystal chandeliers and decorated tiles brought all the way from Europe.[7]
31
+
32
+ However, the rubber boom only lasted about forty years, ending by 1913.[7] Some men had taken the seeds of the Amazon rubber trees and began growing them in the Asian rain forests. The trees grew well there, and they could be grown on plantations. The insects that could destroy them were in South America. So the price of rubber began to fall, and the rubber boom stopped.[7]
ensimple/2037.html.txt ADDED
@@ -0,0 +1,32 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ The Amazon rainforest is the largest forest. It grows in the tropical basin of the Amazon River.
2
+
3
+ The forest lies in a basin drained largely by the Amazon River, with 1100 tributaries. It is a moist broadleaf forest which covers seven million square kilometers (1.7 billion acres). Of this, five and a half million square kilometers (1.4 billion acres) are covered by the rainforest.
4
+
5
+ This region includes territory belonging to nine nations. Most of the forest is in Brazil, with 60% of the rainforest, followed by Peru with 13%, and Colombia with 10%. Venezuela, Ecuador, Bolivia, Guyana, Suriname and French Guiana have just a small amount of rainforest.[1]
6
+
7
+ The Amazon has over half of the planet's remaining rainforests. It is the largest and most species-rich tract of tropical rainforest in the world. The forest was formed at least 55 million years ago, in the Eocene period.
8
+
9
+ Wet tropical forests are the most species-rich biome. Tropical forests in the Americas have more species than African and Asian wet forests.
10
+
11
+ More than one-third of all species in the world live in the Amazon rainforest.[2] It is the richest tropical forest in the world in terms of biodiversity.
12
+
13
+ The region is home to ~2.5 million insect species, tens of thousands of species of plants, and some 2000 species of birds and mammals and a similar number of fish.[3] The diversity of plant species is the highest on earth with some experts estimating that one square kilometre may contain over 75,000 types of trees and 150,000 species of higher plants.[4] One square kilometre of Amazon rainforest can have about 90,000 tons of living plants. This is the largest collection of living plants and animal species in the world. One in five of all the birds in the world live here. To date, an estimated 438,000 species of plants of economic and social interest have been registered in the region with many more remaining to be discovered or cataloged.
14
+
15
+ More than one fifth of the Amazon rainforest has already been destroyed. The forest which remains is threatened. People who care for the environment warn about the loss of biodiversity. They also point out that releasing the carbon which is stored in the trees will increase global warming.
16
+
17
+ Environmentalists are concerned about loss of biodiversity due to the destruction of the forest, and about the release of the carbon in the vegetation, which would accelerate global warming. Amazonian evergreen forests account for about 10% of the world's productivity on land and 10% of the carbon stores in ecosystems[5]—of the order of 1.1 × 1011 metric tonnes of carbon.[6] Amazonian forests are estimated to have accumulated 0.62 ± 0.37 tons of carbon per hectare per year between 1975 and 1996.[6]
18
+
19
+ Some people have calculated that it may even pay to save the forest. They said that one hectare of Amazonian forest in Peru is worth about US $6280, if it is used to harvest fruits, latex and timber (wood). If all the wood is cut down for timber, it has a value of about US $1000. Obviously, this can only be done once; it is not sustainable. When the forest has been cleared, the hectar of land can be used as a pasture, and is worth about US $148. Not all people agree on the study; some have questioned the assumptions behind it.
20
+
21
+ The Brazilian Air Force has been using surveillance aircraft to monitor the forest. At a conference in 2004, scientists warned that the rainforest will no longer be able to absorb the millions of tons of greenhouse gases annually, as it usually does, because of the increased speed of rainforest destruction.
22
+
23
+ 9,169 square miles of rain forest were cut down in 2003 alone. In Brazil alone, European colonists have destroyed more than 90 indigenous tribes since the 1900s.[source?] With them have gone centuries of knowledge of the medicinal value of rainforest species. As their homelands continue to be destroyed by deforestation, rainforest peoples are also disappearing.
24
+
25
+ Once the process of vulcanization was invented, companies began to make many kinds of new rubber products, such as boots and seals for machines. American and European companies began buying large amounts of latex from Brazil. This boom in Brazilian rubber began around 1870, but the need for automobile tires brought the greatest wealth to the new rubber producers.[7]
26
+
27
+ Other rain forest had rubber trees, but Amazonia had by far the best. However, the trees could not be farmed on plantations because if they were next to each other, the insects would eat them. Therefore, people had to find the trees in the rain forest, cut slits in them, leave cups to collect the latex, and come back later to get it.[7]
28
+ Thousands of people moved to the rain forest to work collecting rubber. Most of these people were hired by rich rubber merchants. The rubber merchants loaned them money to come down the river and buy tools. Each merchant’s collectors had to sell the rubber only to their rubber merchant at low prices and buy supplies only from them at high prices. That meant the collectors were always in debt to their merchant and could not leave to do something else. The rubber merchants quickly became very rich.
29
+
30
+ The center of the rubber trade was Manaus on the Rio Negro.[7] It became first a boom town and then a beautiful, wealthy city. It had electricity before most of the cities in the United States did.[7] The newly rich merchants built huge expensive homes and brought in automobiles to travel on the city’s few roads. They built a magnificent opera house with crystal chandeliers and decorated tiles brought all the way from Europe.[7]
31
+
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+ However, the rubber boom only lasted about forty years, ending by 1913.[7] Some men had taken the seeds of the Amazon rubber trees and began growing them in the Asian rain forests. The trees grew well there, and they could be grown on plantations. The insects that could destroy them were in South America. So the price of rubber began to fall, and the rubber boom stopped.[7]
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+ The Amazon rainforest is the largest forest. It grows in the tropical basin of the Amazon River.
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+
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+ The forest lies in a basin drained largely by the Amazon River, with 1100 tributaries. It is a moist broadleaf forest which covers seven million square kilometers (1.7 billion acres). Of this, five and a half million square kilometers (1.4 billion acres) are covered by the rainforest.
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+
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+ This region includes territory belonging to nine nations. Most of the forest is in Brazil, with 60% of the rainforest, followed by Peru with 13%, and Colombia with 10%. Venezuela, Ecuador, Bolivia, Guyana, Suriname and French Guiana have just a small amount of rainforest.[1]
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+
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+ The Amazon has over half of the planet's remaining rainforests. It is the largest and most species-rich tract of tropical rainforest in the world. The forest was formed at least 55 million years ago, in the Eocene period.
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+
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+ Wet tropical forests are the most species-rich biome. Tropical forests in the Americas have more species than African and Asian wet forests.
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+
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+ More than one-third of all species in the world live in the Amazon rainforest.[2] It is the richest tropical forest in the world in terms of biodiversity.
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+
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+ The region is home to ~2.5 million insect species, tens of thousands of species of plants, and some 2000 species of birds and mammals and a similar number of fish.[3] The diversity of plant species is the highest on earth with some experts estimating that one square kilometre may contain over 75,000 types of trees and 150,000 species of higher plants.[4] One square kilometre of Amazon rainforest can have about 90,000 tons of living plants. This is the largest collection of living plants and animal species in the world. One in five of all the birds in the world live here. To date, an estimated 438,000 species of plants of economic and social interest have been registered in the region with many more remaining to be discovered or cataloged.
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+
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+ More than one fifth of the Amazon rainforest has already been destroyed. The forest which remains is threatened. People who care for the environment warn about the loss of biodiversity. They also point out that releasing the carbon which is stored in the trees will increase global warming.
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+
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+ Environmentalists are concerned about loss of biodiversity due to the destruction of the forest, and about the release of the carbon in the vegetation, which would accelerate global warming. Amazonian evergreen forests account for about 10% of the world's productivity on land and 10% of the carbon stores in ecosystems[5]—of the order of 1.1 × 1011 metric tonnes of carbon.[6] Amazonian forests are estimated to have accumulated 0.62 ± 0.37 tons of carbon per hectare per year between 1975 and 1996.[6]
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+
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+ Some people have calculated that it may even pay to save the forest. They said that one hectare of Amazonian forest in Peru is worth about US $6280, if it is used to harvest fruits, latex and timber (wood). If all the wood is cut down for timber, it has a value of about US $1000. Obviously, this can only be done once; it is not sustainable. When the forest has been cleared, the hectar of land can be used as a pasture, and is worth about US $148. Not all people agree on the study; some have questioned the assumptions behind it.
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+
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+ The Brazilian Air Force has been using surveillance aircraft to monitor the forest. At a conference in 2004, scientists warned that the rainforest will no longer be able to absorb the millions of tons of greenhouse gases annually, as it usually does, because of the increased speed of rainforest destruction.
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+
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+ 9,169 square miles of rain forest were cut down in 2003 alone. In Brazil alone, European colonists have destroyed more than 90 indigenous tribes since the 1900s.[source?] With them have gone centuries of knowledge of the medicinal value of rainforest species. As their homelands continue to be destroyed by deforestation, rainforest peoples are also disappearing.
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+
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+ Once the process of vulcanization was invented, companies began to make many kinds of new rubber products, such as boots and seals for machines. American and European companies began buying large amounts of latex from Brazil. This boom in Brazilian rubber began around 1870, but the need for automobile tires brought the greatest wealth to the new rubber producers.[7]
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+
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+ Other rain forest had rubber trees, but Amazonia had by far the best. However, the trees could not be farmed on plantations because if they were next to each other, the insects would eat them. Therefore, people had to find the trees in the rain forest, cut slits in them, leave cups to collect the latex, and come back later to get it.[7]
28
+ Thousands of people moved to the rain forest to work collecting rubber. Most of these people were hired by rich rubber merchants. The rubber merchants loaned them money to come down the river and buy tools. Each merchant’s collectors had to sell the rubber only to their rubber merchant at low prices and buy supplies only from them at high prices. That meant the collectors were always in debt to their merchant and could not leave to do something else. The rubber merchants quickly became very rich.
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+
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+ The center of the rubber trade was Manaus on the Rio Negro.[7] It became first a boom town and then a beautiful, wealthy city. It had electricity before most of the cities in the United States did.[7] The newly rich merchants built huge expensive homes and brought in automobiles to travel on the city’s few roads. They built a magnificent opera house with crystal chandeliers and decorated tiles brought all the way from Europe.[7]
31
+
32
+ However, the rubber boom only lasted about forty years, ending by 1913.[7] Some men had taken the seeds of the Amazon rubber trees and began growing them in the Asian rain forests. The trees grew well there, and they could be grown on plantations. The insects that could destroy them were in South America. So the price of rubber began to fall, and the rubber boom stopped.[7]
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1
+ A rainforest is a forest that receives heavy rainfall. The most notable rainforests are in the tropics or subtropics, mostly in the Intertropical Convergence Zone. The biggest rainforest is the Amazon rainforest, which is mostly in Brazil. Forests like this have extraordinary biodiversity. Biologists say over half of all plant and animal species live in the rainforest. Also more than 1/4 of all medicines come from here. Even though they only cover 6% of the Earth's land area they are still an important source of oxygen.[1]
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+
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+ The rainforest gets an average of 50 to 250 inches (1.2-6.3m) of rain through the year. It is warm all year round rarely getting above 34°C (94 °F) or getting below 20 °C (68 °F). It has an average humidity of 77 to 88%. Tropical rainforests occur in three major geographical areas around the world.[2]
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+
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+ A less-used term is temperate rainforest. For temperate rain forests of North America,[3] annual precipitation is over 140 cm (55 in), and the mean annual temperature is between 4 and 12 °C (39 and 54 °F).
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+ However, definitions in other countries differ considerably. For example, Australian definitions are ecological-structural rather than climatic:
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+
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+ This definition would not suit the forests of western North America, and so the term "temperate rainforest" is not so widely agreed. The weather in a rainforest would be humid, which is wet but warm like a greenhouse. The bottom most layer receives 2% of the sunlight. Only plants adapted to low light can grow in this region. The understory layer lies between the canopy and forest floor. It is a home to a number of birds, snakes and lizards as well as predators such as jaguars and leopards. The leaves are much bigger at this level and insect life is abundant.
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+
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+ The characteristics of the tropical rainforests are:
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+
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+ Tropical rainforests are typically dominated by different plants and animals at different levels. The top layer is the emergent layer. Then there is the canopy layer. Under the tall canopy is the understory. The understory is made up of smaller trees, vines and shrubs. The next layer is called the shrub layer, and has mainly bushes. The bottom layer is the forest floor. This is made up of the small plants on the ground.
13
+
14
+ The emergent layer is the farthest from the ground. High in the trees eagles perch. Their keen eyes search constantly for small monkeys and other prey. Butterflies, parrots, toucans, and hundreds of other colourful birds constantly fly through the tops of the trees.
15
+
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+ The canopy is like a huge green roof over the forest. The trees grow up thin and straight, like pillars seeking the sun. They do not put out branches until they are very tall. Then, they spread out like an umbrella in the sunlight. The trees are so close together that very little light penetrates through to the lower layers. Many kinds of monkeys, birds, and insects live in the layer. The animals that call this layer home often never touch the ground throughout their entire lives. They find everything they need existing within the canopy. Water can be accessed from the boles of trees, if not, the leaves and epiphytes that grow in the canopy can supply that need. The animals eat the leaves and fruit of the trees, insects, or other animals. The tall canopy trees must be able to reach the sunlight high in the air and still get nutrients from the thin soil on the forest floor. Their roots do not go deep into the soil because there is nothing there for the plants to reach. Instead, the roots spread out in all directions along or just under the ground. That way they can quickly make use of the nutrients from the recycled plants and animals that have fallen to the floor.
17
+
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+ The understory is usually a dark, humid place, under the canopy. There is very little light and no breeze because they are blocked out by the canopy. The plants under the canopy must be able to live with very little sunlight. Bushes, large green plants, and small trees make up this layer. Often they will only grow in open patches where a big tree has fallen down. Other plants, like vines, grow on the big trees.
19
+
20
+ The shrub layer is mainly made out of bushes. It contains most of the rainforests orchids, because the orchids use water from the forest floor, vegetation from the understory and sunlight that is reflected from the canopy layer leaves. It is the smallest layer of the rainforest, yet contains over 84% of the rainforest's orchids. It is normally very dark in the shrub layer, apart from little spots of sunlight that comes through empty spaces of the emergent layer. Despite not having very much sunlight, the shrub layer is very humid [wet and warm]. Many insects live in the shrub layer such as scorpions, beetles and tarantulas. Many people categorize the rainforest into 4 layers not 5. They consider the shrub layer to be part of the understory.
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+
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+ The ground level is called the forest floor. Snakes, Tapirs, Jaguars, Tamanduas, and Gorillas are just a few of the species that live here. It is dark on the rainforest floor. Insects, giant centipedes, spiders, ants, and beetles are also very abundant here. The floor of the rainforest is often very open and easy to walk across. That is because so little light reaches the floor that very few plants can grow there.
23
+
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+ One type of plant in the rainforest does not need soil. These plants are called epiphytes, or air plants. Air plants live on the branches of trees in the canopy or understory, with their roots out in the air. In the humid rainforest, they collect water from the rain that falls on them.
25
+
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+ One kind of air plant is a flower called an orchid. There are thousands of different kinds of orchids in the rainforest. Some air plants store water in pools in and around their roots. These pools can become homes for frogs and salamanders. Frogs usually need to lay their eggs in ponds, but some rainforest tree frogs lay their eggs in the pools in air plants. That way, the frogs never have to go down to the ground.Some plants are made for medicine for humans.
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+
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+ Millions of kinds of insects live in the rainforest. It never gets cold enough to kill them. There are bees, butterflies, termites, beetles, and many kinds of flies. There are ants everywhere. One kind of ant is the army ant. Army ants do not have nests. They march out in a line every day to hunt for other insects, which they eat. At night they hook themselves together to form a living nest around their queen and larvae, or baby ants.
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+
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+ Snakes live in the trees and on the forest floor. They eat frogs, eggs, birds, insects, and small animals. Some of the snakes, like the fer-de-lance of Latin America, are poisonous, but others are not. One large non-poisonous snake is the anaconda of South America. It is one of the largest snakes in the world. It kills its prey by wrapping itself around the animal and squeezing it until it cannot breathe.
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+
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+ Monkeys are a very common animal in the rainforest. Most live their lives up in the canopy and the understory. They have long arms to swing from branch to branch, and some use their tails to hold onto the trees while they eat. They are fast and agile, jumping easily from tree to tree for food. Different monkeys eat different things. They can eat nuts, flowers, roots, and frogs. Their hoots and howls are heard throughout the rainforest, even when they cannot be seen among the trees.
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+
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+ Many colorful birds also live among the canopy of the rain forest, and there are also animals that live on the forest floor. The tapir is a forest animal that looks like a large pig. It is actually related to the horse and the rhinoceros. They live in South American and Asian rain forests, eating leaves, twigs, and fruit. Tapirs are among the animals hunted by the big cats of the rain forest. Jaguars, leopards, and tigers are the largest predators of rain forests. These cats have beautiful fur coats that have been hunted for the fur trade for years. The spotted coats of the jaguar and leopards were especially popular for fur coats. Today most countries are trying to protect their big cats, but many are still hunted illegally.
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+
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+ These are only a few of the animals and plants in the rainforest. About half of all of the different kinds, or species, of plants and animals in the entire world live in rain forests. Many of the plants and animals, especially insects, do not even have scientific names, because they have never been classified by a biologist.
37
+
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+ There are many tribes of people who have lived in the rainforests for thousands of years. These forest dwellers usually belong to one of two groups. They are usually hunter/gatherers or slash-and-burn farmers.[5]
39
+
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+ Hunter/gatherers live as they do in every other region of the world. They kill animals and gather what the forest provides for part of their food. Unlike in the Arctic, tools are always available. Unlike in the desert, water is always available. The people do not need clothes to protect them from the weather. The forest even provides a way to make hunting easier. Many of the people hunt with poisoned arrows. The poisons come from the plants of the forest. That makes the animals easier to kill.[5]
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+
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+ Most of the forest people are slash-and-burn farmers. They raise crops in small clearings as well as hunting and gathering in the forest.[5] This provides them with food year-round. They start by cutting (slashing) down the trees and the other plants in an area. They let the dead plants dry out, then they burn them. The ash from the burned plants goes into the soil and makes it fertile for a little while. This is called slash-and-burn farming.
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+
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+ The small clearings grow food crops for a few years, then the family or group moves on and clears a new field. The old field is left to be overgrown by the forest. In a few years, it once again looks like the rain forest that surrounds it.[5]
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+
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+ This type of farming does not harm the rain forest when only a few people are doing it. The small clearings become rain forest again without any damage.[5] The land is used and recycled for use again some other time. The rain forest easily regrows to fill in the clearings after the people leave. That is changing today. Today, the rain forests are getting smaller because too many people are burning them.
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+
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+ There are some serious problems concerning the rainforests that need to be fixed. Rainforests are being cut down too quickly. Every year an area about the size of West Virginia is being destroyed. This is a problem for everyone.[5]
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+ Rainforests are so large and thick that for many years very few people lived or went there. Today, however, that is changing. Millions of poor, often hungry, people live near the rainforests of the world. These people are desperate for a better life, and they think they can find it in the forests.
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+
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+ Settlers can get into the rainforests because modern machines have opened roads deep into the jungle. The roads are usually built by businesses who want to cut down trees or dig up minerals in the forest. Governments build other roads for trade and to allow settlers into the forest. Poor people come into the forest by the thousands on the roads and take land to raise food. They burn off the trees and plants to make a field. Then they plant crops for food and to sell.[5] All around them other farmers do the same, so there is no forest left to grow back.
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+
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+ The new farms can only grow crops for a few years in the poor soil. The farmers then sell the land to a cattle rancher or just leave and clear a new piece of land. The soil is so poor that it will not even grow grass to feed cattle for more than a few more years. By then, the ground is hard packed and grows only a few weeds. The rainforest is destroyed and nothing can be done with the land.[5]
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+
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+ If this continues long enough, the forests will be destroyed and the farmers will have no place to move. Then those people will starve
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+ , because there will be no land left where they can grow food. Forcing them to stop cutting down the forest will not help, because they would just starve now instead of later. New ways need to be found for these people to live on the rainforest land without destroying it.
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+
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+ Also, no one knows how destroying the rainforests will change the earth. We know that less rain will fall once the trees are gone. That may cause some rivers, which supply water to cities around the rainforest, to dry up during part of the year. Also, burning trees puts carbon into the air. Carbon absorbs heat from the sun. Will the burning of so many trees change the air and make the climate on the earth warmer? Experts are arguing about it, but it might be happening.[5]
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+
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+ The rainforests are also the source of many things that are useful to human beings. As many as one out of every four drugs bought at the store were discovered in rainforest. Coffee, chocolate, bananas, corn, tea, sweet potatoes, Brazil nuts, rubber, and tapioca all came from the rainforest. Very valuable wood is taken from the trees of the rainforest. Mahogany, teak, and balsa wood come from there. Those trees can not be grown without the thick, wet, warm rainforests. Thus, the loss of the rainforests would hurt other people besides those that must live there.
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+
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+ Tropical rainforests are located in a band around the equator (Zero degrees latitude), mostly in the area between the Tropic of Cancer (23.5° N latitude) and the Tropic of Capricorn (23.5° S latitude). This 3,000 mile (4800 km) wide band is called the "tropics."
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1
+
2
+
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+ Amphibians are members of the class Amphibia. The living ones are frogs (including toads), salamanders (including newts) and caecilians. They are four-legged vertebrates which are cold blooded.
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+
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+ Amphibians lay their eggs in water, usually in a foam nest. After hatching they are tadpoles, which live in the water and have gills. The tadpoles change into adults in a process called metamorphosis. When they are adult, they have lungs to breathe instead of gills, and legs. Adult amphibians also use their skin to take in oxygen, and some species of salamanders do not have lungs.
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+
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+ The earliest amphibians evolved in the Devonian from lobe-finned fish which had jointed leg-like fins with digits. They could crawl along the sea bottom. Some had developed primitive lungs to help them breathe air when the stagnant pools of the Devonian swamps were low in oxygen. They could also use their strong fins to hoist themselves out of the water and onto dry land if necessary.[1][2]
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+
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+ For tens of millions of years, during the Carboniferous and early Permian, amphibia were top predators on land, especially in the low-lying tropical river systems. In drier conditions, they were less effective, and the ancestors of mammals and reptiles (the Synapsids and Sauropsids) gradually took over the land. They laid cleidoic eggs, which had hard shells, and could be laid out of water. Most of the early large amphibians went extinct in the Triassic period; a few survived to the Lower Cretaceous.[2]
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+
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+ The only living amphibiana today are the Lissamphibia. These include the Anura (frogs and toads), Caudata (salamanders and newts) and Gymnophiona (caecilians). They are all rather small, compared with mammals or reptiles. The smallest frog and vertebrate in the world is the New Guinea frog (Paedophryne amauensis). The biggest amphibian is the Chinese Giant Salamander (Andrias davidianus).
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+
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+ Amphibia are found everywhere in the world, except Antarctica, and there are about 5,565 different species: 88% of them are in the Anura.[3] In number of species, they are more successful than mammals, though they occupy a smaller range of habitats. However, it is said that amphibian populations have been declining all over the world.[4] Conservation is therefore an important concern.
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+
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+ Amphibians like to live near freshwater in warm weather. There have also been species which live in forests, deserts and arctic conditions. Adult amphibians use lungs, and they also get oxygen through their skin, so long as it is moist.[5]
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+ Amphibians may be camouflaged in brown and green, and if so they are prey for birds and reptiles. Their colour gives them camouflage, which is their main defence.
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+ Alternatively, many other amphibia have toxic skin, which is harmful to predators. These are poisonous to eat. This is an important defence against predation. Connected to this is the use of warning colouration. They may be in vivid colours of red, black, and yellow. Research into the rough-skinned newt and the garter snake shows this is a typical case of co-evolution. Where they live in the same area, the newts get more poisonous, and the snakes develop more resistance to the poison.[6][7][8]
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+
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+ Amphibians have colour vision and depth of focus for clear sight. They also have eyelids, glands and ducts which keep the eyes moist. These are adaptations to life on land: amphibia were the first vertebrates to have these features.
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+
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+ Some amphibians, such as the common coquí, lay eggs out of water (in this case, on palm leaves). The eggs develop directly into adult frogs, by-passing the tadpole stage. Others, like mudpuppies and olms, have a different development. In a process called neoteny, they become sexually developed as tadpoles, and continue to live in the water with gills.
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+
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+ The order Anura includes the frogs and toads. There is no fundamental difference between frogs and toads. Frogs have a short body, webbed digits (fingers or toes), protruding eyes, forked tongue and no tail. They are exceptional jumpers: many of their features, particularly their long, powerful legs, are adaptations to improve jumping performance. They often live in semi-aquatic or inhabit humid areas.[9]
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+
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+ A popular distinction is often made between frogs and toads on the basis of their appearance. Toads' warty skin is an adaptation for making their toxic slime. Apart from these glands, their skin is dry, and that is an adaptation to drier habitats. These features have evolved a number of times independently: convergent evolution. The distinction has no taxonomic basis. The only family exclusively given the common name "toad" is Bufonidae (the "true toads"), but many species from other families are commonly called "toads".[9]
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+
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+ The order Gymnophiona contains caecilians. They look like worms or snakes, but they are amphibians. Scientists say it is difficult to study them because most of them live underground. Their skins make a mucus that makes them slippery enough to slip through the dirt. They can make a toxic material in their skins, like many frogs and toads do.[10][11]
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+
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+ The order Caudata is the salamanders.
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+
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+ Newts are salamanders which spend their life in the water even though they are adults. They are classified in the subfamily Pleurodelinae of the family Salamandridae.
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+
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+ Respiration differs between species of salamanders. Species that lack lungs respire through gills. In most cases, these are external gills, visible as tufts on either side of the head. Some salamanders that are terrestrial have lungs that are used in respiration, although these are simple and sac-like, unlike the more complex organs found in mammals. Many species, such as the Olm, have both lungs and gills as adults.[12]
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+
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+ Some terrestrial species lack both lungs and gills and perform gas exchange through their skin. Even some species with lungs also respire through the skin in this manner.
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+
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+ The skin of salamanders secretes mucus. This helps to keep the animal moist when on dry land, keeps their salt balance while in water, and lubricates during swimming. Salamanders also secrete poison from glands in their skin, and some additionally have skin glands for secreting courtship pheromones.[12]
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+
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+ Axolotls, from the genus Ambystoma (or mole salamanders), are neotenic amphibians. This means they get to sexual maturity and reproduce while still in a larval form.
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+
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+ Most salamanders and newts have some defence against predators, usually a poison which makes them uneatable. Their bright colours are warning colouration. If, instead, they are camouflaged, this means they are probably not protected by a toxin.
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+ The second line of defence is to shed their tail, which can grow again. The tail wriggles a bit, attracts the predator while the business part of the salamander moves off.
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+ There are over 350 lungless salamanders. Most of them are terrestrial and are active in daytime. Lungless salamanders may communicate with their nose.[13]p168 Slender salamanders are found in the Pacific Coast. They are sometimes called "worm salamanders". This is because they have slimmer (skinny) bodies than most salamanders.[13]p182 If touched, slender salamanders will bounce on the ground and then run away.
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+
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+ The order Gymnophiona includes the caecilians. These are long, cylindrical, limbless animals that look like snakes or worms. Their skin has circular folds, increasing their similarity to the segments of earthworms. Some are aquatic but most live underground in burrows they hollow out. Many caecilians give birth to live young, and in the animals that do not do this, the eggs may undergo metamorphosis before they hatch. Caecilians are found in tropical Africa, Asia and Central and South America. There are 171 different species.
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+
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+ They are burrowing amphibians. This means that they dig themselves in wet soil like worms. Their heads are strong and have bones that help them dig.[14]p7 Because caecilians have a lot of vertebrae, they can bend easily.
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+
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+ Amphibians are the only vertebrates to go through metamorphosis. This means that their young look different from their adult.[15]p8 Amphibians usually reproduce in early spring to late summer, though some reproduce in winter and fall.[13]p156 Most frogs and toads, such as the common frog (Rana temporalis), gather in large groups to ponds, rivers, swamps and lakes to breed.[15]p10 Male frogs and toads may croak to attract a female. When a female frog has chosen a mate, the male frog hops on top of her. They swim together as she lay eggs in the water.[14]p7 Sometimes, males fight to mate with a female.[14]p7 Frogs can lay up to 100 to 60,000 eggs in one clutch. This is called "frogspawn".
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+
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+ It is a fundamental feature of amphibia that their reproduction is, one way or another, tied to water. This is because their eggs, although covered by jelly, cannot survive long in dry conditions.
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+ Most female amphibians lays her eggs in water. Males release sperm to fertilize them. The eggs are laid one by one or in batches. Batches of eggs can look like a long chain or a ball of foam. They may wrap their eggs around plants in the water. They do this so their eggs will not drift away.[15]p8
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+ Tree frogs usually lay their eggs on a leaf in a rainwater pool. Bullfrogs, such as the male American bullfrog and the male African bullfrog, stay with their tadpoles and protect them from predators. They also move their tadpoles by using their nose to dig a channel to another place where there is more water.[15]p9 They do this so their tadpoles do not dry up. Most amphibians leave their eggs to look after themselves. Fish and other animals eat most of their eggs. Male midwife toads carry their eggs on their backs. When they are ready to hatch, the toad goes back to the water and release them.[14]p10
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+
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+ Tadpoles do not have lungs when they hatch and instead have gills. Because gills have a large surface area, tadpoles can get more oxygen by using them. Young tadpoles have their gills exposed. When they get older, their gills are covered over by skin.[15]p6 When they hatch, tadpoles eat constantly. The tadpoles eat what is left of their eggs, this is usually their first food.[15]p8
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+ Frog, toad and newt tadpoles eat plants such as algae and pondweed or filter feed. When they get older, they may start to feed on tiny animals in the water. Salamander tadpoles and surinam horned toad tadpoles are carnivorous throughout their tadpole stage.[15]p9 Surinam horned toad tadpoles are very aggressive. They eat other tadpoles if food is nowhere to be found. The eggs of the spadefoot toad hatches in three days. Their tadpoles complete their metamorphosis in six to eight days. This is because spadefoot toads lay their eggs in places where water will dry up soon.[15]p13
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+
65
+ Tadpoles of frogs and toads start to grow their back legs first. They then grow front legs a few weeks later. When tadpoles grow their limbs they are called "froglets". This is because they look rather like a smaller version of adult frogs and toads. Tadpoles will also start to grow a backbone after growing their front limbs. After this, their mouths get bigger and their eyes will stick out more. After a tadpole has grown its hands, their tails continue to get shorter until there is nothing left of them.[15]p11
66
+
67
+ Salamanders and newts can be found living in streams. Salamanders can be found in rotten logs, holes or underground places that are wet such as under leaves.[13]p152 Web-toed salamanders live in habitats where there are a lot of rocks. They like to hide under rocks and stones.[13]p195 The tailed frogs, like to live in cold water habitats.[13]p199 In their habitat, amphibians like to live where there are a lot of places to hide. These include nearby small trees, logs and plants. While underwater they like to hide near aquatic plants and rocks. Tree and dart frogs like to live in forests on trees, plants and on the ground under leaves.
68
+
69
+ Some amphibia can be found living in the desert or the arctic.[15]p12 The desert froglet lives in the desert. They are only active at night, when temperatures are much cooler. It rarely rains in the desert and because of this, desert frogs will burrow to keep cool. They use their mucus to keep them wet. They will spread it all over their bodies. The mucus will harden to keep the water it produces from escaping. Once the desert frog has done this, it will stay in its cocoon and will not move. They will stay like this for several months to years until a rainstorm. Desert frogs and toads lose water more quickly. The spadefoot toad will spit on the ground. Once they have done this, they will lay on it. Their bodies will take in the water. Their bodies are thin and have a lot of blood vessels, this helps them to be able to take water through their skin. The California newt can survive a fire by spreading its mucous over its body.[15]p12
70
+
71
+ Arctic frogs such as the wood frog, moor frog and the common frog has to live with freezing temperatures for a long time. They will burrow in places where they can get into a cocoon. Like every living organisms, amphibians must have water to survive. Amphibians however, need freshwater. Some frogs such as burrowing frogs can keep water in their bladders. This allows them to stay underground without drying up. The crab-eating frog lives near water that is somewhat salty. They will eat saltwater crabs. Torrent salamanders lives in cold waters. Because of this they have shorter lungs. Short lungs helps them to float easily.
72
+
73
+ Amphibia are world-wide, though restricted in distribution by their need for moist or watery habitats to reproduce.
74
+
75
+ Many amphibia have secretions in their skin which makes them toxic. They do not produce toxins themselves.[16] They get toxins from what they eat. They eat insects in their habitat. These insects get the poison from a plant. The toxin has been discovered in beetles.[16] This means that they are likely the cause of poisons found in amphibians. Amphibians do not produce batrachotoxin in captivity, which means that it is not harmful to touch them. The American Indian tribe comechingóns used the toxins of the arrow dart frogs when hunting.[16]
76
+
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+ Newts in the genus Taricha has a poison called tetrodotoxin, a neurotoxin. Scientists believe that toxins in newts are caused by bacteria in the genera Pseudoalteromonas, Pseudomonas and Vibrio. Because of this, the newts do not have a lot of predators. However, some species of snakes have develop a resistance. This means that they can eat newts without the toxin hurting them. It is a case of co-evolution.
78
+
79
+ Amphibians' eyes have lids, glands and ducts. They have good colour vision[17] Caecilian eyes are small and dark. Most of them are blind. Most amphibians have a good sense of smell, even underwater.
80
+
81
+ The skeletal system of amphibians are similar to other four-legged animals. They have a spine, rib cage, long bones such as the humerus and femur. They also have short bones such as the phalanges, metacarpals, and metatarsals. Most amphibians have four limbs, except for caecilians. The bones in amphibians are hollow and do not weigh much.[18]
82
+
83
+ Amphibians are predatory animals. They mostly eat live invertebrates and animals that do not move too quickly. These include caterpillars, earthworms, crayfish, water beetles, snails and dragon fly larvae.[19]p667 Many amphibians use their sticky tongues to catch their prey. They will swallow the animal whole, but may chew it just a bit for it to go down their throats. The Ranidae family and the Ceratophrys genus will eat almost anything they can fit into their mouths.[19]p668 These include rodents, birds, ducklings, small fish and small mammals.[20] Most frogs are cannibalistic, and will eat each other if food is no where to be found. Some amphibians will even eat their own tadpoles and eggs if there is no food for them.[21]
84
+
85
+ In captivity, pet frogs will be given crickets, worms, small fish, rodents and fruit flies.[22] Adult amphibians can help decrease the mosquito population by eating most of their larvae.[23]
86
+
87
+ Caecilians eat earthworms, termites and beetle larvae, and also small lizards.[24]p31 Caecilians rely on their smell to find food. They like to eat earthworms and will find them by picking up their chemical signals. Salamanders and newts are fed a lot of different types of worms. These include blood worms and earthworms. They can eat small fish such as goldfish, fathead minnows and guppies. Salamanders also eat crickets and pinkies, which are baby rats.[19]p771
88
+
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+ The amphibian population have been decreasing from all locations in the world.[4] Scientists have said that the declining of amphibians is one of the most critical threats to global biodiversity.[4] A number of causes are believed to be involved. These include habitat destruction, over-exploitation, pollution, introduced species, climate change, destruction of the ozone layer, and diseases like chytridiomycosis. Ultraviolet radiation damages the skin, eyes and eggs of amphibians. However, the declines of amphibian population are still not understood.[25]
90
+
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+ The Amphibian Conservation Action Plan (ACAP) have released a global strategy to help the amphibian population. It was developed by over 80 leading experts.[26] The Amphibian Specialist Group of the World Conservation Union (IUCN) are working on another global strategy to help amphibian populations.[26] The Amphibian Ark (AA) is an organization that was created to help the public be aware of the decline in amphibian populations. They have been working with zoos and aquaria around the world. They try to encourage them to create a natural habitat for threatened amphibians.[26] Another project is the Panama Amphibian Rescue and Conservation Project (PARCP) which are trying to spread awareness about chyridiomycosis. The disease is spreading into eastern Panama and threatening all amphibians living there.[27]
92
+
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+ On January 21, 2008, Evolutionarily Distinct and Globally Endangered (EDGE) released a statement to the public.[28] It was created by Helen Meredith, who identified nature's most endangered species. Meredith explains that 85% of the top 100 endangered amphibians list are receiving little to no conservation attention.
94
+
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+ Bullfrog legs are a source of food for Southern United States and the Midwestern United States.[29] People hunt bullfrogs at night near rivers. The bullfrogs' legs are cooked, while their backs are fried.[30]p9 In China, bullfrogs are sold alive for eating. However, they are later cooked dead with vegetables. In the state of California, people must have a license to catch bullfrogs for food.[31]p256 In schools, bullfrogs are dissected in biology classes. Usually, this is done in grammar school.[32]p85 The dissecting is a method for teaching students the anatomy of a bullfrog.[32]p85 The emperor newt is hunted in China for food. They are also used there for medicine. Burrowing frogs are able to hold water in their bladder, because of this indigenous Australians use them to drink water.[15]p13
96
+
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+ Amphibians are also kept as pets.[33]p4 They are kept in aquariums or a terrarium. A terrarium is a tank that is decorated with plants and soil on one side. On the other side, there is water. Most amphibians would need one place for land and another for water.[33]p8 Each type of amphibian should have its special needs taken care of. Semi-aquatic amphibians need both land and water divided in the tank. Tropical frogs would need mist and high humidity in their terrariums.[34]p7 Water for amphibia needs dechlorination. The chlorine in tap water can kill amphibia. Some amphibians popular exotic pets, and are found in pet stores that sell reptiles.[33]p22
ensimple/2040.html.txt ADDED
@@ -0,0 +1,21 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ A forest is a piece of land with many trees. Many animals need forests to live and survive. Forests are very important and grow in many places around the world. They are an ecosystem which includes many plants and animals.
2
+
3
+ Temperature and rainfall are the two most important things for forests. Many places are too cold or too dry for them. Forests can exist from the equator to near the polar regions, but different climates have different kinds of forests. In cold climates conifers dominate, but in temperate zone and tropical climates forests are mainly made up of flowering plants. Different rainfall also makes different kinds of forest. No forests exist in deserts, just a few trees in places where their roots can get at some underground water.
4
+
5
+ The three major forest biomes are coniferous forests, deciduous forests, and tropical rain forests.
6
+
7
+ Coniferous forests stretch across Canada, Alaska, Northern Asia, and Northern Europe. Their main trees are evergreen conifers which produce seeds in cones.
8
+
9
+ The weather during the winter is cold, but when snow melts in the spring, some parts of the forest become swamps. There are not many different types of trees in coniferous forests because of the cold weather, and the poor soil. Fallen branches, needles, and dead animals do not decay as fast as in warmer regions. This is why the soil in coniferous forests is not very fertile. Also, only those trees that have adapted to cold weather and poor soil can survive. These trees have flexible branches that support heavy snowfalls. Less water evaporates from their leaves because of the shape of their needles.[1]
10
+
11
+ Many coniferous trees shade large parts of the soil below them, which keeps many plants from growing on the forest ground. Some animals that live in the coniferous forests are pine martens, deer, bears, caribou, moose, lynes, heavers, and birds such as grey owls, crossbills, and marblers.
12
+
13
+ Deciduous forests mostly grow in the temperate zone of North America, Europe and Asia. They have a moderate climate during the spring, summer, autumn (fall) and winter, with rainfall of at least 500mm a year. Summers are warm and winters are cold, but not as cold as the northern coniferous forests. In the winter, snow covers the ground and the deciduous trees and plants lose their leaves. The decaying leaves help make the soil rich in nutrients. Many insects, spiders, snails, and worms make their homes in this rich soil. Wild flowers and ferns grow almost everywhere in the spring. New leaves capture the energy of the sun and sprout before the tall trees shadow them.[2]
14
+
15
+ During the winter, many birds migrate to warmer climate. Many small animals hibernate or aestivate, in other words, slow down their metabolism and sleep or stay in their burrows. Some of the other animals just slow down their metabolism and eat food they stored during the summer and fall months. The trees in winter are bare, but with the coming of spring, leaves sprout, birds return, animals are born, and all the forest animals get busy with their lives. Animals that we may see or hear in this biome include bears, deer, raccoons, otters, beavers, foxes, frogs, squirrels, snakes, salamanders, and birds such as woodpeckers, robins, owls, blue jays and the small birds usually called tits.
16
+
17
+ Some deciduous forests grow in tropical places that do not have a winter but do have a wet season and a dry season.
18
+
19
+ Tropical rainforests grow in South America, the Congo, Indonesia and some nearby countries, Hawaii, and eastern Australia. Tropical rainforests are aptly named, as it rains here on about half the days. The only season in a tropical rain forest is summer, so plants grow for all 12 months of the year. Trees are tall and thick in the rain forest and they grow so close together that they seem to form a big umbrella of greenery called a canopy. This blocks out most of the sunlight. The air is muggy as it filters through the dense canopy cover of the trees. The light that filters through this tree cover is dim and green. Only along river banks and in places that have been cleared does enough sunlight allow plants to grow on the forest ground.
20
+
21
+ Millions of species of plants and animals live in the world's tropical forests. Life in the rain forest exists at different levels or layers in the trees. Each layer has a name, such as 'emergent', 'canopy', 'understory', and 'forest floor. Animal life is found on all levels.
ensimple/2041.html.txt ADDED
@@ -0,0 +1,21 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ A forest is a piece of land with many trees. Many animals need forests to live and survive. Forests are very important and grow in many places around the world. They are an ecosystem which includes many plants and animals.
2
+
3
+ Temperature and rainfall are the two most important things for forests. Many places are too cold or too dry for them. Forests can exist from the equator to near the polar regions, but different climates have different kinds of forests. In cold climates conifers dominate, but in temperate zone and tropical climates forests are mainly made up of flowering plants. Different rainfall also makes different kinds of forest. No forests exist in deserts, just a few trees in places where their roots can get at some underground water.
4
+
5
+ The three major forest biomes are coniferous forests, deciduous forests, and tropical rain forests.
6
+
7
+ Coniferous forests stretch across Canada, Alaska, Northern Asia, and Northern Europe. Their main trees are evergreen conifers which produce seeds in cones.
8
+
9
+ The weather during the winter is cold, but when snow melts in the spring, some parts of the forest become swamps. There are not many different types of trees in coniferous forests because of the cold weather, and the poor soil. Fallen branches, needles, and dead animals do not decay as fast as in warmer regions. This is why the soil in coniferous forests is not very fertile. Also, only those trees that have adapted to cold weather and poor soil can survive. These trees have flexible branches that support heavy snowfalls. Less water evaporates from their leaves because of the shape of their needles.[1]
10
+
11
+ Many coniferous trees shade large parts of the soil below them, which keeps many plants from growing on the forest ground. Some animals that live in the coniferous forests are pine martens, deer, bears, caribou, moose, lynes, heavers, and birds such as grey owls, crossbills, and marblers.
12
+
13
+ Deciduous forests mostly grow in the temperate zone of North America, Europe and Asia. They have a moderate climate during the spring, summer, autumn (fall) and winter, with rainfall of at least 500mm a year. Summers are warm and winters are cold, but not as cold as the northern coniferous forests. In the winter, snow covers the ground and the deciduous trees and plants lose their leaves. The decaying leaves help make the soil rich in nutrients. Many insects, spiders, snails, and worms make their homes in this rich soil. Wild flowers and ferns grow almost everywhere in the spring. New leaves capture the energy of the sun and sprout before the tall trees shadow them.[2]
14
+
15
+ During the winter, many birds migrate to warmer climate. Many small animals hibernate or aestivate, in other words, slow down their metabolism and sleep or stay in their burrows. Some of the other animals just slow down their metabolism and eat food they stored during the summer and fall months. The trees in winter are bare, but with the coming of spring, leaves sprout, birds return, animals are born, and all the forest animals get busy with their lives. Animals that we may see or hear in this biome include bears, deer, raccoons, otters, beavers, foxes, frogs, squirrels, snakes, salamanders, and birds such as woodpeckers, robins, owls, blue jays and the small birds usually called tits.
16
+
17
+ Some deciduous forests grow in tropical places that do not have a winter but do have a wet season and a dry season.
18
+
19
+ Tropical rainforests grow in South America, the Congo, Indonesia and some nearby countries, Hawaii, and eastern Australia. Tropical rainforests are aptly named, as it rains here on about half the days. The only season in a tropical rain forest is summer, so plants grow for all 12 months of the year. Trees are tall and thick in the rain forest and they grow so close together that they seem to form a big umbrella of greenery called a canopy. This blocks out most of the sunlight. The air is muggy as it filters through the dense canopy cover of the trees. The light that filters through this tree cover is dim and green. Only along river banks and in places that have been cleared does enough sunlight allow plants to grow on the forest ground.
20
+
21
+ Millions of species of plants and animals live in the world's tropical forests. Life in the rain forest exists at different levels or layers in the trees. Each layer has a name, such as 'emergent', 'canopy', 'understory', and 'forest floor. Animal life is found on all levels.
ensimple/2042.html.txt ADDED
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1
+
2
+
3
+ Martialinae
4
+
5
+ Leptanillinae
6
+
7
+ Amblyoponinae
8
+
9
+ Paraponerinae
10
+
11
+ Agroecomyrmecinae
12
+
13
+ Ponerinae
14
+
15
+ Proceratiinae
16
+
17
+ Ecitoninae‡
18
+
19
+ Aenictinae‡
20
+
21
+ Dorylini‡
22
+
23
+ Aenictogitoninae‡
24
+
25
+ Cerapachyinae‡*
26
+
27
+ Leptanilloidinae‡
28
+
29
+ Dolichoderinae
30
+
31
+ Aneuretinae
32
+
33
+ Pseudomyrmecinae
34
+
35
+ Myrmeciinae
36
+
37
+ Ectatomminae
38
+
39
+ Heteroponerinae
40
+
41
+ Myrmicinae
42
+
43
+ Formicinae
44
+
45
+ A phylogeny of the extant ant subfamilies.[2][3]
46
+ *Cerapachyinae is paraphyletic
47
+ ‡ The previous dorylomorph subfamilies were synonymized under Dorylinae by Brady et al. in 2014[4]
48
+
49
+ Ants are a kind of insect that live together in big groups. Scientists sometimes use the name Formicidae when talking about all of the different kinds of ants that have lived.[5][6]
50
+
51
+ Ants are a lot like wasps and bees. They all came from the same kind of animal a long time ago, but now they are different. There are about 22,000 different kinds of ants, but we only know of 12,500 for sure.[7][8][9] Every kind of ant has a thin part in the middle of their body and two long body parts on their heads called antennae.
52
+
53
+ Ants live in groups that can be big or small. Some kinds of ants live in small groups and eat other animals. Some ants work together in very big groups. These groups can have millions of ants in them that travel outside every day in a big area. Ants are small, but they are very strong. Some ants are strong enough to carry things that are as heavy as 20 ants. Some ants are called workers. Workers dig tunnels and carry food back to the colony so that other ants and the queen ant can eat.[10]
54
+
55
+ The groups that ants live in are called colonies. A colony has a female ant called a queen which lays eggs. Those eggs will grow into more ants. Big colonies of ants have different kinds of ants that grow from the eggs. These are called different castes of ants. Some are workers which do jobs like carrying and digging, and soldiers which fight other animals. Worker and solider ants are females. Another type of ant are drones which are male ants.[11]
56
+
57
+ Really big ant colonies are sometimes called superorganisms. This means the ants work together so well that they are like little parts of one big animal. Ants cannot live by themselves for very long because they need to work with other ants.[12][13]
58
+
59
+ Ants have colonies almost everywhere on planet Earth. Places that do not have ants are Antarctica because it's very cold and there's not much food, far away places that ants can't get to, or islands because there's not enough things that ants need there.
60
+
61
+ The family Formicidae belongs to the order Hymenoptera, which also includes sawflies, bees and wasps. Ants evolved from a lineage within the vespoid wasps.
62
+
63
+ Phylogenetic analysis suggests that ants arose in the Lower Cretaceous period about 110 to 130 million years ago, or even earlier. One estimate from DNA studies places the origin of ants at ≈140 million years ago (mya).[14] Another study puts it in the Jurassic at 185 ± 36 mya (95% confidence limits).[15]
64
+
65
+ After the rise of flowering plants about 100 million years ago ants diversified. They became ecologically dominant about 60 million years ago.[16][17][18]
66
+
67
+ In 1966 E.O. Wilson and his colleagues identified the fossil remains of an ant (Sphecomyrma freyi) from the Cretaceous period. The specimen, trapped in amber dating back to more than 80 million years ago, has features of both ants and wasps.[19] Sphecomyrma was probably a ground forager but some suggest that primitive ants were likely to have been predators underneath the surface of the soil.
68
+
69
+ During the Cretaceous period, a few species of primitive ants ranged widely on the Laurasian super-continent (the northern hemisphere). They were scarce in comparison to other insects, representing about 1% of the insect population.
70
+
71
+ Ants became dominant after adaptive radiation at the beginning of the Cainozoic. By the Oligocene and Miocene ants had come to represent 20-40% of all insects found in major fossil deposits. Of the species that lived in the Eocene epoch, approximately one in ten genera survive to the present. Genera surviving today comprise 56% of the genera in Baltic amber fossils (early Oligocene), and 92% of the genera in Dominican amber fossils (apparently early Miocene).[16][20]p23
72
+
73
+ Termites, though sometimes called white ants, are not ants and belong to the order Isoptera. Termites are actually more closely related to cockroaches and mantids. Termites are eusocial but differ greatly in the genetics of reproduction. The similar social structure is attributed to convergent evolution.[21] Velvet ants look like large ants, but are wingless female wasps.[22][23]
74
+
75
+ The life of an ant starts from an egg. If the egg is fertilised, the progeny will be female (diploid); if not, it will be male (haploid). Ants develop by complete metamorphosis with the larval stages passing through a pupal stage before emerging as an adult. The larva is fed and cared for by workers.
76
+
77
+ Food is given to the larvae by trophallaxis, a process in which an ant regurgitates liquid food held in its crop. This is also how adults share food, stored in the 'social stomach', among themselves.
78
+
79
+ Larvae may also be given solid food brought back by foraging workers, and may even be taken to captured prey in some species. The larvae grow through a series of moults and enter the pupal stage.[24]
80
+
81
+ The differentiation into queens and workers (which are both female), and different castes of workers, is influenced in some species by the food the larvae get. Genetic influences, and the control of gene expression by the feeding are complex. The determination of caste is a major subject of research.[20]p351, 372[25]
82
+
83
+ A new worker spends the first few days of its adult life caring for the queen and young. It then does digging and other nest work, and later, defends the nest and forages. These changes are sometimes fairly sudden, and define what are called temporal castes. An explanation for the sequence is suggested by the high casualties involved in foraging, making it an acceptable risk only for ants that are older and are likely to die soon of natural causes.[26][27]
84
+
85
+ Most ant species have a system in which only the queen and breeding females can mate. Contrary to popular belief, some ant nests have multiple queens (polygyny). The life history of Harpegnathos saltator is
86
+ exceptional among ants because both queens and some workers
87
+ reproduce sexually.[28]
88
+
89
+ The winged male ants, called drones, emerge from pupae with the breeding females (although some species, like army ants, have wingless queens), and do nothing in life except eat and mate.
90
+
91
+ Most ants produce a new generation each year.[29] During the species specific breeding period, new reproductives, winged males and females leave the colony in what is called a nuptial flight. Typically, the males take flight before the females. Males then use visual cues to find a common mating ground, for example, a landmark such as a pine tree to which other males in the area converge. Males secrete a mating pheromone that females follow. Females of some species mate with just one male, but in some others they may mate with anywhere from one to ten or more different males.[20] Mated females then seek a suitable place to begin a colony. There, they break off their wings and begin to lay and care for eggs. The females store the sperm they obtain during their nuptial flight to selectively fertilise future eggs.
92
+
93
+ The first workers to hatch are weak and smaller than later workers, but they begin to serve the colony immediately. They enlarge the nest, forage for food and care for the other eggs. This is how new colonies start in most species. Species that have multiple queens may have a queen leaving the nest along with some workers to found a colony at a new site,[20]p143 a process akin to swarming in honeybees.
94
+
95
+ A wide range of reproductive strategies have been noted in ant species. Females of many species are known to be capable of reproducing asexually through parthenogenesis,[30] and one species, Mycocepurus smithii is known to be all-female.[31]
96
+
97
+ Ant colonies can be long-lived. The queens can live for up to 30 years, and workers live from 1 to 3 years. Males, however, are more transitory, and survive only a few weeks.[32] Ant queens are estimated to live 100 times longer than solitary insects of a similar size.[33]
98
+
99
+ Ants are active all year long in the tropics but, in cooler regions, survive the winter in a state of dormancy or inactivity. The forms of inactivity are varied and some temperate species have larvae going into the inactive state (diapause), while in others, the adults alone pass the winter in a state of reduced activity.[34]
100
+
101
+ It may seem strange that ants have uses, but there are some. Some people use ants for food, medicine and rituals. Some species of ants are used for pest control (they eat pests that destroy food for humans). They can damage crops and enter buildings, though. Some species, like the red imported fire ant, live in places where they came to by complete accident.
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1
+ Taiwan, officially the Republic of China (ROC; Chinese: 中華民國; pinyin: Zhōnghuá Mínguó), is a region and country in East Asia. It is the nationalist government of China since its settlement in 1949. It is called the Republic of China (ROC) (also called Taiwan) which is a special region comprising the island of Taiwan and nearby islands (Pescadores islands and parts of Fujian). The ROC government led by Chinese Nationalist (Kuomintang abbreviated as KMT) moved to Taiwan after the Communist army took over the capital of Beijing. Currently, the ROC government governs Taipei, the capital of Taiwan. Taiwan is southeast of the People's Republic of China's mainland, south of Japan, and north of the Philippines.
2
+
3
+ Taiwan has also been called Formosa, a Portuguese name which means "beautiful" in Portuguese.
4
+
5
+ The largest cities in Taiwan are the capital, Taipei, and the port city of Kaohsiung.
6
+
7
+ Most people living in Taiwan (sometimes called Taiwanese) are Han. Taiwan has three large Han groups. They speak different dialects of Chinese and their ancestors came from different places: the Southern Fujianese (from China's Fujian Province), the Hakka (from China), and Mainlanders (from Mainland China after 1948).
8
+
9
+ There are also Taiwanese Aborigines who have lived in Taiwan before the Han came to live there.
10
+
11
+ There are two Chinese governments in the world: The People's Republic of China (PRC) and the Republic of China (ROC). Today, in reality, the PRC government controls mainland China, and the ROC government governs Taiwan. The ROC government governed most of China mainland from 1911 to 1949, before losing control of China mainland to the PRC.
12
+
13
+ Today, people who live in Taiwan have different ideas. Although many Taiwanese think there is no freedom in China, there are still some Taiwanese who want to be united again with China. The majority of the people in Taiwan want to keep everything like it is now.
14
+
15
+ Today most countries of the world recognize the People's Republic of China as China. Even though Taiwan is not recognized by the UN as a sovereign nation,[13] most countries still have close economic and cultural relations with Taiwan. So, both sides are not making any big changes from the political status quo. This policy was expressed in a 1992 Consensus among some leaders of both sides.
16
+
17
+ In March 2004, China's government passed a law called the Anti-Secession Law. The law requires the Chinese military to invade Taiwan immediately if they declare independence.[14] The law shows China's concern over a growing move towards independence by the government of Taiwan.[15]
18
+
19
+ The island of Taiwan is about 180 kilometers off the southeastern coast of China. It is across the Taiwan Strait. It has an area of 35,883 km2 (13,855 sq mi).[7] The East China Sea is to the north, the Philippine Sea to the east, the Luzon Strait directly to the south and the South China Sea to the southwest.[16]
20
+
21
+ Taiwan's highest point is Yu Shan (Jade Mountain). It is 3,952 meters high (12,966 ft). There are five other peaks over 3,500 meters.
22
+
23
+ The Penghu Islands are 50 km (31.1 mi) west of the main island. They have an area of 126.9 km2 (49.0 sq mi). More distant islands controlled by the Republic of China are the Kinmen, Wuchiu and Matsu Islands off the coast of Fujian. They have a total area of 180.5 km2 (69.7 sq mi). The Pratas Islands and Taiping Island in the South China Sea have a total area of 2.9 km2 (1.1 sq mi). They have no permanent inhabitants.[7]
24
+
25
+ The largest cities in Taiwan are:
ensimple/2044.html.txt ADDED
@@ -0,0 +1,5 @@
 
 
 
 
 
 
1
+ Formula 1 is a type of motorsport. Teams compete in a series of Grand Prix races, held in different countries around the world. Some of the most popular races are held in Monaco, Japan, Italy and Britain. The cars are very fast, reaching speeds of up to 350 kilometers per hour. The championship has been won many times by different teams like McLaren, Ferrari and Williams. Teams can consist of as many as 600 people, who all come together every race weekend, and using each of their individual expertise try to obtain the best result - a victory. The winning driver and team each get twenty-five points towards the Drivers' and Constructors' Championship. Teams consist of drivers, test drivers, a team principal, mechanics, engineers, and designers. Winning a race takes a good qualifying position, flawless strategy, perfect pitstops and a fast car. If you get the most poles (first place) then you get a trophy. This was added in 2014.
2
+
3
+ Drivers are paid huge salaries and money to risk their lives every time they step into the cockpit of the F1 car. Like all types of motor racing, the dangers associated with Formula One are great. Therefore, there are many safety measures. Drivers wear 4 layers of flameproof overalls, made of a fire resistant material called Nomex. A drivers helmet must be able to resist an 800 degree Celsius flame for at least 45 seconds, as well as big G forces. The helmets are so strong that they can be driven over by trucks with no damage being done to them. Carbon fibre is the ideal material for the bodywork of Formula One cars, as it is light and strong. Because of this, the cars are very expensive to build and repair. The design of cars differs from team to team. Each team has two entries into the championship, which means two cars to build. The current tyre suppliers are Pirelli - making sure every car has the right tyre for the differing weather conditions. Wet weather driving is considered a skill in Formula One, as the cars are harder to drive.
4
+
5
+ The body that runs Formula One, the FIA, is based in France. Although Formula One is a 'billion dollar business', a drop in viewership and attendance figures at races has prompted the FIA to make a number of rule changes in recent years. These changes are meant to make the races more interesting, so more people watch F1 on television.
ensimple/2045.html.txt ADDED
@@ -0,0 +1,55 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ A programming language is a type of written language that tells computers what to do in order to work. Programming languages are used to make all the computer programs and computer software. A programming language is like a set of instructions that the computer follows to do something.
2
+
3
+ A programmer writes source code text in the programming language to create programs. Usually, the programming language uses real words for some of the commands, so that the language is easier for a human to read. Many programming languages use punctuation just like a normal language. Many programs now are "compiled". This means that the computer translates the source code into another language (such as assembly language[1][2] or machine language), which is much faster and easier for the computer to read, but much harder for a person to read.
4
+
5
+ Computer programs must be written very carefully. If the programmer makes mistakes, or the program tries to do something the programmer did not design it to do, the program might then "crash" or stop working. When a program has a problem because of how the code was written, this is called a "bug". A very small mistake can cause a very big problem.
6
+
7
+ There are many types of programming languages. Most programming languages do not follow one type alone, so it is difficult to assign a type for each language. The examples of each type are given in each section below because they are the best well-known examples of that type.
8
+
9
+ High-level programming languages require less knowledge about the hardware compared to low-level programming languages. High-level programming languages require an interpreter to convert the source code into low-level programming languages.
10
+
11
+ Declarative programming languages[3] describe a "problem" but they usually do not say how the problem should be solved. The problem description uses logic, and "solving" the problem often looks like automatically proving a system of logical axioms. Examples for such programming languages are Prolog[4][5][6][7], XSLT, LISP[8] and SQL[9].
12
+
13
+ Imperative programming languages describe a system of state changes. At the start, the program is in a certain state, and the computer is given steps to follow, in order to perform an action. Following the steps causes the program to "change state".
14
+
15
+ In general, declarative programming languages are safer and shorter. Imperative programming languages are more common, because they are easier to use.
16
+
17
+ Functional programming[10][11] looks at programming like a function in mathematics. The program receives input, together with some information, and uses this information to create output. It will not have a state in between, and it will also not change things that are not related to the computation.
18
+
19
+ Procedural programs specify or describe sets of steps or state changes.
20
+
21
+ Stack based languages look at some of the program's memory like a stack of cards. There are very few things that can be done with a stack. A data item can be put on the top of the stack. This operation is generally called "push". A data item can be removed from the top of the stack. This is called a "pop". You can look at the item at the top of the stack without removing it. This is called a "peek".
22
+
23
+ If a program is written as "push 5; push 3; add; pop;" it will put 5 on the top of the stack, put 3 on top of the 5, add the top two values (3 + 5 = 8), replace the 3 and 5 with the 8, and print the top (8). Examples for programming languages that are stack-based are the languages Postscript[12] and Forth[13].
24
+
25
+ Object-oriented programming languages[14][15][16] place data and functions that change data into a single unit. This unit is called an "object". Objects can interact with each other and change another object's data. This is usually called encapsulation or information hiding[17]. Most modern programming languages are object-oriented, or at least allow this style of programming. Examples of this are Java[18][19], Python[20], Ruby, C++[21][22][23], C#[24][25] and other C languages.
26
+
27
+ Flow oriented programming sees programming as connecting different components. These components send messages back and forth. A single component can be part of different "programs", without the need to be changed internally.
28
+
29
+ Some of the languages above can be used for scientific computing. For example, C++[26] and Python[27][28] are also used in this way. On the other hand, there are some languages that has scientific computing as their main purpose. The following are some examples:
30
+
31
+ LaTeX[42][43] and SATySFi are programming languages which helps document creation.
32
+
33
+ Every programming language has rules about what it can and can not do. These include:
34
+
35
+ Most languages have official standards that define the rules of how to write the source code. Some programming languages have two or more standards. This can happen when a new standard replaces an old one. For example, the Perl 5[44] standard replaced Perl 4 in 1993. It can happen because two people made two standards at the same time. For example, there are several standards for APL.
36
+
37
+ Object-Oriented Programming (sometimes shortened to OOP) is a form of programming where all parts of the program are objects. Objects are pieces of memory with the same structure that can be used again and again. A bank account, bitmap, or hero from a video game could all be objects within a program. Objects are made up of properties (pieces of information the object stores) and methods which are things the object can do. A Dog object might have properties like height and hairColor. Its methods might include bark() and wagTail().
38
+
39
+ All objects are created from templates called classes. You can think of a class as a mold from which objects are made. The class defines all the properties and methods that its objects will have. Objects created from a class are called instances of the class. A class can extend another class, which means that it takes all the properties and methods of the class but can add its own.
40
+
41
+ Here is an example of what a class might look like in a programming language:
42
+
43
+ Notice that the Dog class extends the Mammal class, so all dogs will have the properties of a mammal, like hairLength, and methods, like eat() or sleep().
44
+
45
+ Object-oriented programming is used in many of today's most popular programming languages, such as Java, C#, Objective-C[45], C++, Python, Ruby[46], Javascript[47], and ActionScript[48][49].
46
+
47
+ Here is a simple program written in Visual Basic (a language made by Microsoft[50][51][52]):
48
+
49
+ This program asks the user his or her age and responds based on what the user typed. If the user typed something that is not a number, the program says so. If the user typed a number less than zero, the program says so. If the user says he or she is older than 100 years old, the program says "That's old!" If the user typed a correct age the program says back to the user how old he or she is.
50
+
51
+ Here is a program that does the same thing as the program above, but in Python:
52
+
53
+ The same thing as the program above, but in C#:
54
+
55
+ The same thing again, but in Haskell:
ensimple/2046.html.txt ADDED
@@ -0,0 +1,31 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ A fossil is the remains or trace of an ancient living thing.[1]
2
+
3
+ Fossils of animals, plants, or protists occur in sedimentary rock.
4
+
5
+ In a typical fossil, the body form is retained, but the original molecules that made up the body have been replaced by some inorganic material, such as calcium carbonate (CaCO3) or silica (SiO2). The fossil feels like, and is, made of rock. It has been mineralised or petrified (literally, turned into rock).
6
+
7
+ A fossil may also be an imprint or impression of a living thing remaining in the fossilised mud of a long-gone age.
8
+
9
+ Some organisms fossilise well, others do not. The most common fossils are those left behind by organisms that produce hard materials. The hard, calcitic shells of molluscs (such as clams and snails) and of now-rare brachiopods (also known as lampshells) are examples. These sea-dwelling shellfish have produced many fossiliferous (that is, fossil-bearing) chalky layers of limestone in the earth.
10
+
11
+ Soft-bodied organisms can fossilise in special circumstances: the Ediacaran biota is a good example.[2]
12
+
13
+ The best-known fossils for the general public are those of the giant, prehistoric dinosaurs. The fossilized bones and fossilized tracks of these huge, ancient reptiles can be seen in many museums of natural history and earth science.
14
+
15
+ The study of fossils by geologists and biologists is known as paleontology. If the study puts living things in their ecological context it is called paleobiology.
16
+
17
+ There are some sites where fossils have been found with remarkable details, or in large numbers. Palaeontologists call these sites by the German term Lagerstätten. The La Brea tar pits in Los Angeles is such a place. So are the Solnhofen limestone quarries in Bavaria.
18
+
19
+ Microscopic or very tiny fossils are called "microfossils"; while larger, macroscopic fossils — such as those of seashells and mammals — are called "macrofossils". Natural stones which look like fossilized organisms, but are not fossils at all, are called "pseudofossils".
20
+
21
+ Although most fossils are formed from the hard parts of organisms, there are also indirect signs of prehistoric life. Examples such as a worm's trail or an animal's footprint are quite common. They are known as trace fossils. Fossilized excrement, faeces or dung is known as a coprolite. Chemical traces of prehistoric organisms is called a chemofossil. Objects made by prehistoric people are called artifacts.
22
+
23
+ Even when the remains of soft-bodied animals are gone, there may be impressions, molds or carbon traces which remain permanently. So, in special cases, we do have fossils even of small, soft invertebrate animals.
24
+
25
+ Sometimes a fossil is produced as a result of dryness (desiccation), freezing, or pine resin. Mummified animals, ice-covered wooly mammoths, and insect-filled amber are examples of such fossils.
26
+
27
+ Living fossils, however, are not fossils at all. Instead, they are modern-day organisms which very closely resemble their prehistoric ancestors of many millions of years ago. The ginkgo tree, the coelacanth and the horseshoe crab are good examples.
28
+
29
+ Many pre-scientific peoples noticed fossils, but not all thought they were the remains of living things. Perhaps the first to leave a record of his thought was the Ancient Greek philosopher Xenophanes (about 570BC–470BC).[3]p387 His ideas were reported by later writers:
30
+
31
+ These ideas were rediscovered in the 17th century in Europe. Nicolas Steno in the Netherlands and Robert Hooke at the Royal Society in London both wrote and gave lectures about fossils. In the 18th century fossil-collecting began, and serious thinking on geology began to make progress. In the 19th century geology became a modern science, and fossils played a part in the theory of evolution.
ensimple/2047.html.txt ADDED
@@ -0,0 +1,31 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ A fossil is the remains or trace of an ancient living thing.[1]
2
+
3
+ Fossils of animals, plants, or protists occur in sedimentary rock.
4
+
5
+ In a typical fossil, the body form is retained, but the original molecules that made up the body have been replaced by some inorganic material, such as calcium carbonate (CaCO3) or silica (SiO2). The fossil feels like, and is, made of rock. It has been mineralised or petrified (literally, turned into rock).
6
+
7
+ A fossil may also be an imprint or impression of a living thing remaining in the fossilised mud of a long-gone age.
8
+
9
+ Some organisms fossilise well, others do not. The most common fossils are those left behind by organisms that produce hard materials. The hard, calcitic shells of molluscs (such as clams and snails) and of now-rare brachiopods (also known as lampshells) are examples. These sea-dwelling shellfish have produced many fossiliferous (that is, fossil-bearing) chalky layers of limestone in the earth.
10
+
11
+ Soft-bodied organisms can fossilise in special circumstances: the Ediacaran biota is a good example.[2]
12
+
13
+ The best-known fossils for the general public are those of the giant, prehistoric dinosaurs. The fossilized bones and fossilized tracks of these huge, ancient reptiles can be seen in many museums of natural history and earth science.
14
+
15
+ The study of fossils by geologists and biologists is known as paleontology. If the study puts living things in their ecological context it is called paleobiology.
16
+
17
+ There are some sites where fossils have been found with remarkable details, or in large numbers. Palaeontologists call these sites by the German term Lagerstätten. The La Brea tar pits in Los Angeles is such a place. So are the Solnhofen limestone quarries in Bavaria.
18
+
19
+ Microscopic or very tiny fossils are called "microfossils"; while larger, macroscopic fossils — such as those of seashells and mammals — are called "macrofossils". Natural stones which look like fossilized organisms, but are not fossils at all, are called "pseudofossils".
20
+
21
+ Although most fossils are formed from the hard parts of organisms, there are also indirect signs of prehistoric life. Examples such as a worm's trail or an animal's footprint are quite common. They are known as trace fossils. Fossilized excrement, faeces or dung is known as a coprolite. Chemical traces of prehistoric organisms is called a chemofossil. Objects made by prehistoric people are called artifacts.
22
+
23
+ Even when the remains of soft-bodied animals are gone, there may be impressions, molds or carbon traces which remain permanently. So, in special cases, we do have fossils even of small, soft invertebrate animals.
24
+
25
+ Sometimes a fossil is produced as a result of dryness (desiccation), freezing, or pine resin. Mummified animals, ice-covered wooly mammoths, and insect-filled amber are examples of such fossils.
26
+
27
+ Living fossils, however, are not fossils at all. Instead, they are modern-day organisms which very closely resemble their prehistoric ancestors of many millions of years ago. The ginkgo tree, the coelacanth and the horseshoe crab are good examples.
28
+
29
+ Many pre-scientific peoples noticed fossils, but not all thought they were the remains of living things. Perhaps the first to leave a record of his thought was the Ancient Greek philosopher Xenophanes (about 570BC–470BC).[3]p387 His ideas were reported by later writers:
30
+
31
+ These ideas were rediscovered in the 17th century in Europe. Nicolas Steno in the Netherlands and Robert Hooke at the Royal Society in London both wrote and gave lectures about fossils. In the 18th century fossil-collecting began, and serious thinking on geology began to make progress. In the 19th century geology became a modern science, and fossils played a part in the theory of evolution.
ensimple/2048.html.txt ADDED
@@ -0,0 +1,31 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ A fossil is the remains or trace of an ancient living thing.[1]
2
+
3
+ Fossils of animals, plants, or protists occur in sedimentary rock.
4
+
5
+ In a typical fossil, the body form is retained, but the original molecules that made up the body have been replaced by some inorganic material, such as calcium carbonate (CaCO3) or silica (SiO2). The fossil feels like, and is, made of rock. It has been mineralised or petrified (literally, turned into rock).
6
+
7
+ A fossil may also be an imprint or impression of a living thing remaining in the fossilised mud of a long-gone age.
8
+
9
+ Some organisms fossilise well, others do not. The most common fossils are those left behind by organisms that produce hard materials. The hard, calcitic shells of molluscs (such as clams and snails) and of now-rare brachiopods (also known as lampshells) are examples. These sea-dwelling shellfish have produced many fossiliferous (that is, fossil-bearing) chalky layers of limestone in the earth.
10
+
11
+ Soft-bodied organisms can fossilise in special circumstances: the Ediacaran biota is a good example.[2]
12
+
13
+ The best-known fossils for the general public are those of the giant, prehistoric dinosaurs. The fossilized bones and fossilized tracks of these huge, ancient reptiles can be seen in many museums of natural history and earth science.
14
+
15
+ The study of fossils by geologists and biologists is known as paleontology. If the study puts living things in their ecological context it is called paleobiology.
16
+
17
+ There are some sites where fossils have been found with remarkable details, or in large numbers. Palaeontologists call these sites by the German term Lagerstätten. The La Brea tar pits in Los Angeles is such a place. So are the Solnhofen limestone quarries in Bavaria.
18
+
19
+ Microscopic or very tiny fossils are called "microfossils"; while larger, macroscopic fossils — such as those of seashells and mammals — are called "macrofossils". Natural stones which look like fossilized organisms, but are not fossils at all, are called "pseudofossils".
20
+
21
+ Although most fossils are formed from the hard parts of organisms, there are also indirect signs of prehistoric life. Examples such as a worm's trail or an animal's footprint are quite common. They are known as trace fossils. Fossilized excrement, faeces or dung is known as a coprolite. Chemical traces of prehistoric organisms is called a chemofossil. Objects made by prehistoric people are called artifacts.
22
+
23
+ Even when the remains of soft-bodied animals are gone, there may be impressions, molds or carbon traces which remain permanently. So, in special cases, we do have fossils even of small, soft invertebrate animals.
24
+
25
+ Sometimes a fossil is produced as a result of dryness (desiccation), freezing, or pine resin. Mummified animals, ice-covered wooly mammoths, and insect-filled amber are examples of such fossils.
26
+
27
+ Living fossils, however, are not fossils at all. Instead, they are modern-day organisms which very closely resemble their prehistoric ancestors of many millions of years ago. The ginkgo tree, the coelacanth and the horseshoe crab are good examples.
28
+
29
+ Many pre-scientific peoples noticed fossils, but not all thought they were the remains of living things. Perhaps the first to leave a record of his thought was the Ancient Greek philosopher Xenophanes (about 570BC–470BC).[3]p387 His ideas were reported by later writers:
30
+
31
+ These ideas were rediscovered in the 17th century in Europe. Nicolas Steno in the Netherlands and Robert Hooke at the Royal Society in London both wrote and gave lectures about fossils. In the 18th century fossil-collecting began, and serious thinking on geology began to make progress. In the 19th century geology became a modern science, and fossils played a part in the theory of evolution.
ensimple/2049.html.txt ADDED
@@ -0,0 +1,31 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ A fossil is the remains or trace of an ancient living thing.[1]
2
+
3
+ Fossils of animals, plants, or protists occur in sedimentary rock.
4
+
5
+ In a typical fossil, the body form is retained, but the original molecules that made up the body have been replaced by some inorganic material, such as calcium carbonate (CaCO3) or silica (SiO2). The fossil feels like, and is, made of rock. It has been mineralised or petrified (literally, turned into rock).
6
+
7
+ A fossil may also be an imprint or impression of a living thing remaining in the fossilised mud of a long-gone age.
8
+
9
+ Some organisms fossilise well, others do not. The most common fossils are those left behind by organisms that produce hard materials. The hard, calcitic shells of molluscs (such as clams and snails) and of now-rare brachiopods (also known as lampshells) are examples. These sea-dwelling shellfish have produced many fossiliferous (that is, fossil-bearing) chalky layers of limestone in the earth.
10
+
11
+ Soft-bodied organisms can fossilise in special circumstances: the Ediacaran biota is a good example.[2]
12
+
13
+ The best-known fossils for the general public are those of the giant, prehistoric dinosaurs. The fossilized bones and fossilized tracks of these huge, ancient reptiles can be seen in many museums of natural history and earth science.
14
+
15
+ The study of fossils by geologists and biologists is known as paleontology. If the study puts living things in their ecological context it is called paleobiology.
16
+
17
+ There are some sites where fossils have been found with remarkable details, or in large numbers. Palaeontologists call these sites by the German term Lagerstätten. The La Brea tar pits in Los Angeles is such a place. So are the Solnhofen limestone quarries in Bavaria.
18
+
19
+ Microscopic or very tiny fossils are called "microfossils"; while larger, macroscopic fossils — such as those of seashells and mammals — are called "macrofossils". Natural stones which look like fossilized organisms, but are not fossils at all, are called "pseudofossils".
20
+
21
+ Although most fossils are formed from the hard parts of organisms, there are also indirect signs of prehistoric life. Examples such as a worm's trail or an animal's footprint are quite common. They are known as trace fossils. Fossilized excrement, faeces or dung is known as a coprolite. Chemical traces of prehistoric organisms is called a chemofossil. Objects made by prehistoric people are called artifacts.
22
+
23
+ Even when the remains of soft-bodied animals are gone, there may be impressions, molds or carbon traces which remain permanently. So, in special cases, we do have fossils even of small, soft invertebrate animals.
24
+
25
+ Sometimes a fossil is produced as a result of dryness (desiccation), freezing, or pine resin. Mummified animals, ice-covered wooly mammoths, and insect-filled amber are examples of such fossils.
26
+
27
+ Living fossils, however, are not fossils at all. Instead, they are modern-day organisms which very closely resemble their prehistoric ancestors of many millions of years ago. The ginkgo tree, the coelacanth and the horseshoe crab are good examples.
28
+
29
+ Many pre-scientific peoples noticed fossils, but not all thought they were the remains of living things. Perhaps the first to leave a record of his thought was the Ancient Greek philosopher Xenophanes (about 570BC–470BC).[3]p387 His ideas were reported by later writers:
30
+
31
+ These ideas were rediscovered in the 17th century in Europe. Nicolas Steno in the Netherlands and Robert Hooke at the Royal Society in London both wrote and gave lectures about fossils. In the 18th century fossil-collecting began, and serious thinking on geology began to make progress. In the 19th century geology became a modern science, and fossils played a part in the theory of evolution.
ensimple/205.html.txt ADDED
@@ -0,0 +1,97 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+
2
+
3
+ Amphibians are members of the class Amphibia. The living ones are frogs (including toads), salamanders (including newts) and caecilians. They are four-legged vertebrates which are cold blooded.
4
+
5
+ Amphibians lay their eggs in water, usually in a foam nest. After hatching they are tadpoles, which live in the water and have gills. The tadpoles change into adults in a process called metamorphosis. When they are adult, they have lungs to breathe instead of gills, and legs. Adult amphibians also use their skin to take in oxygen, and some species of salamanders do not have lungs.
6
+
7
+ The earliest amphibians evolved in the Devonian from lobe-finned fish which had jointed leg-like fins with digits. They could crawl along the sea bottom. Some had developed primitive lungs to help them breathe air when the stagnant pools of the Devonian swamps were low in oxygen. They could also use their strong fins to hoist themselves out of the water and onto dry land if necessary.[1][2]
8
+
9
+ For tens of millions of years, during the Carboniferous and early Permian, amphibia were top predators on land, especially in the low-lying tropical river systems. In drier conditions, they were less effective, and the ancestors of mammals and reptiles (the Synapsids and Sauropsids) gradually took over the land. They laid cleidoic eggs, which had hard shells, and could be laid out of water. Most of the early large amphibians went extinct in the Triassic period; a few survived to the Lower Cretaceous.[2]
10
+
11
+ The only living amphibiana today are the Lissamphibia. These include the Anura (frogs and toads), Caudata (salamanders and newts) and Gymnophiona (caecilians). They are all rather small, compared with mammals or reptiles. The smallest frog and vertebrate in the world is the New Guinea frog (Paedophryne amauensis). The biggest amphibian is the Chinese Giant Salamander (Andrias davidianus).
12
+
13
+ Amphibia are found everywhere in the world, except Antarctica, and there are about 5,565 different species: 88% of them are in the Anura.[3] In number of species, they are more successful than mammals, though they occupy a smaller range of habitats. However, it is said that amphibian populations have been declining all over the world.[4] Conservation is therefore an important concern.
14
+
15
+ Amphibians like to live near freshwater in warm weather. There have also been species which live in forests, deserts and arctic conditions. Adult amphibians use lungs, and they also get oxygen through their skin, so long as it is moist.[5]
16
+
17
+ Amphibians may be camouflaged in brown and green, and if so they are prey for birds and reptiles. Their colour gives them camouflage, which is their main defence.
18
+
19
+ Alternatively, many other amphibia have toxic skin, which is harmful to predators. These are poisonous to eat. This is an important defence against predation. Connected to this is the use of warning colouration. They may be in vivid colours of red, black, and yellow. Research into the rough-skinned newt and the garter snake shows this is a typical case of co-evolution. Where they live in the same area, the newts get more poisonous, and the snakes develop more resistance to the poison.[6][7][8]
20
+
21
+ Amphibians have colour vision and depth of focus for clear sight. They also have eyelids, glands and ducts which keep the eyes moist. These are adaptations to life on land: amphibia were the first vertebrates to have these features.
22
+
23
+ Some amphibians, such as the common coquí, lay eggs out of water (in this case, on palm leaves). The eggs develop directly into adult frogs, by-passing the tadpole stage. Others, like mudpuppies and olms, have a different development. In a process called neoteny, they become sexually developed as tadpoles, and continue to live in the water with gills.
24
+
25
+ The order Anura includes the frogs and toads. There is no fundamental difference between frogs and toads. Frogs have a short body, webbed digits (fingers or toes), protruding eyes, forked tongue and no tail. They are exceptional jumpers: many of their features, particularly their long, powerful legs, are adaptations to improve jumping performance. They often live in semi-aquatic or inhabit humid areas.[9]
26
+
27
+ A popular distinction is often made between frogs and toads on the basis of their appearance. Toads' warty skin is an adaptation for making their toxic slime. Apart from these glands, their skin is dry, and that is an adaptation to drier habitats. These features have evolved a number of times independently: convergent evolution. The distinction has no taxonomic basis. The only family exclusively given the common name "toad" is Bufonidae (the "true toads"), but many species from other families are commonly called "toads".[9]
28
+
29
+ The order Gymnophiona contains caecilians. They look like worms or snakes, but they are amphibians. Scientists say it is difficult to study them because most of them live underground. Their skins make a mucus that makes them slippery enough to slip through the dirt. They can make a toxic material in their skins, like many frogs and toads do.[10][11]
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+
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+ The order Caudata is the salamanders.
32
+
33
+ Newts are salamanders which spend their life in the water even though they are adults. They are classified in the subfamily Pleurodelinae of the family Salamandridae.
34
+
35
+ Respiration differs between species of salamanders. Species that lack lungs respire through gills. In most cases, these are external gills, visible as tufts on either side of the head. Some salamanders that are terrestrial have lungs that are used in respiration, although these are simple and sac-like, unlike the more complex organs found in mammals. Many species, such as the Olm, have both lungs and gills as adults.[12]
36
+
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+ Some terrestrial species lack both lungs and gills and perform gas exchange through their skin. Even some species with lungs also respire through the skin in this manner.
38
+
39
+ The skin of salamanders secretes mucus. This helps to keep the animal moist when on dry land, keeps their salt balance while in water, and lubricates during swimming. Salamanders also secrete poison from glands in their skin, and some additionally have skin glands for secreting courtship pheromones.[12]
40
+
41
+ Axolotls, from the genus Ambystoma (or mole salamanders), are neotenic amphibians. This means they get to sexual maturity and reproduce while still in a larval form.
42
+
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+ Most salamanders and newts have some defence against predators, usually a poison which makes them uneatable. Their bright colours are warning colouration. If, instead, they are camouflaged, this means they are probably not protected by a toxin.
44
+
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+ The second line of defence is to shed their tail, which can grow again. The tail wriggles a bit, attracts the predator while the business part of the salamander moves off.
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+
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+ There are over 350 lungless salamanders. Most of them are terrestrial and are active in daytime. Lungless salamanders may communicate with their nose.[13]p168 Slender salamanders are found in the Pacific Coast. They are sometimes called "worm salamanders". This is because they have slimmer (skinny) bodies than most salamanders.[13]p182 If touched, slender salamanders will bounce on the ground and then run away.
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+
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+ The order Gymnophiona includes the caecilians. These are long, cylindrical, limbless animals that look like snakes or worms. Their skin has circular folds, increasing their similarity to the segments of earthworms. Some are aquatic but most live underground in burrows they hollow out. Many caecilians give birth to live young, and in the animals that do not do this, the eggs may undergo metamorphosis before they hatch. Caecilians are found in tropical Africa, Asia and Central and South America. There are 171 different species.
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+
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+ They are burrowing amphibians. This means that they dig themselves in wet soil like worms. Their heads are strong and have bones that help them dig.[14]p7 Because caecilians have a lot of vertebrae, they can bend easily.
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+
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+ Amphibians are the only vertebrates to go through metamorphosis. This means that their young look different from their adult.[15]p8 Amphibians usually reproduce in early spring to late summer, though some reproduce in winter and fall.[13]p156 Most frogs and toads, such as the common frog (Rana temporalis), gather in large groups to ponds, rivers, swamps and lakes to breed.[15]p10 Male frogs and toads may croak to attract a female. When a female frog has chosen a mate, the male frog hops on top of her. They swim together as she lay eggs in the water.[14]p7 Sometimes, males fight to mate with a female.[14]p7 Frogs can lay up to 100 to 60,000 eggs in one clutch. This is called "frogspawn".
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+
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+ It is a fundamental feature of amphibia that their reproduction is, one way or another, tied to water. This is because their eggs, although covered by jelly, cannot survive long in dry conditions.
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+
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+ Most female amphibians lays her eggs in water. Males release sperm to fertilize them. The eggs are laid one by one or in batches. Batches of eggs can look like a long chain or a ball of foam. They may wrap their eggs around plants in the water. They do this so their eggs will not drift away.[15]p8
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+
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+ Tree frogs usually lay their eggs on a leaf in a rainwater pool. Bullfrogs, such as the male American bullfrog and the male African bullfrog, stay with their tadpoles and protect them from predators. They also move their tadpoles by using their nose to dig a channel to another place where there is more water.[15]p9 They do this so their tadpoles do not dry up. Most amphibians leave their eggs to look after themselves. Fish and other animals eat most of their eggs. Male midwife toads carry their eggs on their backs. When they are ready to hatch, the toad goes back to the water and release them.[14]p10
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+
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+ Tadpoles do not have lungs when they hatch and instead have gills. Because gills have a large surface area, tadpoles can get more oxygen by using them. Young tadpoles have their gills exposed. When they get older, their gills are covered over by skin.[15]p6 When they hatch, tadpoles eat constantly. The tadpoles eat what is left of their eggs, this is usually their first food.[15]p8
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+
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+ Frog, toad and newt tadpoles eat plants such as algae and pondweed or filter feed. When they get older, they may start to feed on tiny animals in the water. Salamander tadpoles and surinam horned toad tadpoles are carnivorous throughout their tadpole stage.[15]p9 Surinam horned toad tadpoles are very aggressive. They eat other tadpoles if food is nowhere to be found. The eggs of the spadefoot toad hatches in three days. Their tadpoles complete their metamorphosis in six to eight days. This is because spadefoot toads lay their eggs in places where water will dry up soon.[15]p13
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+ Tadpoles of frogs and toads start to grow their back legs first. They then grow front legs a few weeks later. When tadpoles grow their limbs they are called "froglets". This is because they look rather like a smaller version of adult frogs and toads. Tadpoles will also start to grow a backbone after growing their front limbs. After this, their mouths get bigger and their eyes will stick out more. After a tadpole has grown its hands, their tails continue to get shorter until there is nothing left of them.[15]p11
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+
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+ Salamanders and newts can be found living in streams. Salamanders can be found in rotten logs, holes or underground places that are wet such as under leaves.[13]p152 Web-toed salamanders live in habitats where there are a lot of rocks. They like to hide under rocks and stones.[13]p195 The tailed frogs, like to live in cold water habitats.[13]p199 In their habitat, amphibians like to live where there are a lot of places to hide. These include nearby small trees, logs and plants. While underwater they like to hide near aquatic plants and rocks. Tree and dart frogs like to live in forests on trees, plants and on the ground under leaves.
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+ Some amphibia can be found living in the desert or the arctic.[15]p12 The desert froglet lives in the desert. They are only active at night, when temperatures are much cooler. It rarely rains in the desert and because of this, desert frogs will burrow to keep cool. They use their mucus to keep them wet. They will spread it all over their bodies. The mucus will harden to keep the water it produces from escaping. Once the desert frog has done this, it will stay in its cocoon and will not move. They will stay like this for several months to years until a rainstorm. Desert frogs and toads lose water more quickly. The spadefoot toad will spit on the ground. Once they have done this, they will lay on it. Their bodies will take in the water. Their bodies are thin and have a lot of blood vessels, this helps them to be able to take water through their skin. The California newt can survive a fire by spreading its mucous over its body.[15]p12
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+ Arctic frogs such as the wood frog, moor frog and the common frog has to live with freezing temperatures for a long time. They will burrow in places where they can get into a cocoon. Like every living organisms, amphibians must have water to survive. Amphibians however, need freshwater. Some frogs such as burrowing frogs can keep water in their bladders. This allows them to stay underground without drying up. The crab-eating frog lives near water that is somewhat salty. They will eat saltwater crabs. Torrent salamanders lives in cold waters. Because of this they have shorter lungs. Short lungs helps them to float easily.
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+ Amphibia are world-wide, though restricted in distribution by their need for moist or watery habitats to reproduce.
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+ Many amphibia have secretions in their skin which makes them toxic. They do not produce toxins themselves.[16] They get toxins from what they eat. They eat insects in their habitat. These insects get the poison from a plant. The toxin has been discovered in beetles.[16] This means that they are likely the cause of poisons found in amphibians. Amphibians do not produce batrachotoxin in captivity, which means that it is not harmful to touch them. The American Indian tribe comechingóns used the toxins of the arrow dart frogs when hunting.[16]
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+
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+ Newts in the genus Taricha has a poison called tetrodotoxin, a neurotoxin. Scientists believe that toxins in newts are caused by bacteria in the genera Pseudoalteromonas, Pseudomonas and Vibrio. Because of this, the newts do not have a lot of predators. However, some species of snakes have develop a resistance. This means that they can eat newts without the toxin hurting them. It is a case of co-evolution.
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+ Amphibians' eyes have lids, glands and ducts. They have good colour vision[17] Caecilian eyes are small and dark. Most of them are blind. Most amphibians have a good sense of smell, even underwater.
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+ The skeletal system of amphibians are similar to other four-legged animals. They have a spine, rib cage, long bones such as the humerus and femur. They also have short bones such as the phalanges, metacarpals, and metatarsals. Most amphibians have four limbs, except for caecilians. The bones in amphibians are hollow and do not weigh much.[18]
82
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+ Amphibians are predatory animals. They mostly eat live invertebrates and animals that do not move too quickly. These include caterpillars, earthworms, crayfish, water beetles, snails and dragon fly larvae.[19]p667 Many amphibians use their sticky tongues to catch their prey. They will swallow the animal whole, but may chew it just a bit for it to go down their throats. The Ranidae family and the Ceratophrys genus will eat almost anything they can fit into their mouths.[19]p668 These include rodents, birds, ducklings, small fish and small mammals.[20] Most frogs are cannibalistic, and will eat each other if food is no where to be found. Some amphibians will even eat their own tadpoles and eggs if there is no food for them.[21]
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+ In captivity, pet frogs will be given crickets, worms, small fish, rodents and fruit flies.[22] Adult amphibians can help decrease the mosquito population by eating most of their larvae.[23]
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+ Caecilians eat earthworms, termites and beetle larvae, and also small lizards.[24]p31 Caecilians rely on their smell to find food. They like to eat earthworms and will find them by picking up their chemical signals. Salamanders and newts are fed a lot of different types of worms. These include blood worms and earthworms. They can eat small fish such as goldfish, fathead minnows and guppies. Salamanders also eat crickets and pinkies, which are baby rats.[19]p771
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+ The amphibian population have been decreasing from all locations in the world.[4] Scientists have said that the declining of amphibians is one of the most critical threats to global biodiversity.[4] A number of causes are believed to be involved. These include habitat destruction, over-exploitation, pollution, introduced species, climate change, destruction of the ozone layer, and diseases like chytridiomycosis. Ultraviolet radiation damages the skin, eyes and eggs of amphibians. However, the declines of amphibian population are still not understood.[25]
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+ The Amphibian Conservation Action Plan (ACAP) have released a global strategy to help the amphibian population. It was developed by over 80 leading experts.[26] The Amphibian Specialist Group of the World Conservation Union (IUCN) are working on another global strategy to help amphibian populations.[26] The Amphibian Ark (AA) is an organization that was created to help the public be aware of the decline in amphibian populations. They have been working with zoos and aquaria around the world. They try to encourage them to create a natural habitat for threatened amphibians.[26] Another project is the Panama Amphibian Rescue and Conservation Project (PARCP) which are trying to spread awareness about chyridiomycosis. The disease is spreading into eastern Panama and threatening all amphibians living there.[27]
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+ On January 21, 2008, Evolutionarily Distinct and Globally Endangered (EDGE) released a statement to the public.[28] It was created by Helen Meredith, who identified nature's most endangered species. Meredith explains that 85% of the top 100 endangered amphibians list are receiving little to no conservation attention.
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+ Bullfrog legs are a source of food for Southern United States and the Midwestern United States.[29] People hunt bullfrogs at night near rivers. The bullfrogs' legs are cooked, while their backs are fried.[30]p9 In China, bullfrogs are sold alive for eating. However, they are later cooked dead with vegetables. In the state of California, people must have a license to catch bullfrogs for food.[31]p256 In schools, bullfrogs are dissected in biology classes. Usually, this is done in grammar school.[32]p85 The dissecting is a method for teaching students the anatomy of a bullfrog.[32]p85 The emperor newt is hunted in China for food. They are also used there for medicine. Burrowing frogs are able to hold water in their bladder, because of this indigenous Australians use them to drink water.[15]p13
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+ Amphibians are also kept as pets.[33]p4 They are kept in aquariums or a terrarium. A terrarium is a tank that is decorated with plants and soil on one side. On the other side, there is water. Most amphibians would need one place for land and another for water.[33]p8 Each type of amphibian should have its special needs taken care of. Semi-aquatic amphibians need both land and water divided in the tank. Tropical frogs would need mist and high humidity in their terrariums.[34]p7 Water for amphibia needs dechlorination. The chlorine in tap water can kill amphibia. Some amphibians popular exotic pets, and are found in pet stores that sell reptiles.[33]p22
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1
+ A fossil is the remains or trace of an ancient living thing.[1]
2
+
3
+ Fossils of animals, plants, or protists occur in sedimentary rock.
4
+
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+ In a typical fossil, the body form is retained, but the original molecules that made up the body have been replaced by some inorganic material, such as calcium carbonate (CaCO3) or silica (SiO2). The fossil feels like, and is, made of rock. It has been mineralised or petrified (literally, turned into rock).
6
+
7
+ A fossil may also be an imprint or impression of a living thing remaining in the fossilised mud of a long-gone age.
8
+
9
+ Some organisms fossilise well, others do not. The most common fossils are those left behind by organisms that produce hard materials. The hard, calcitic shells of molluscs (such as clams and snails) and of now-rare brachiopods (also known as lampshells) are examples. These sea-dwelling shellfish have produced many fossiliferous (that is, fossil-bearing) chalky layers of limestone in the earth.
10
+
11
+ Soft-bodied organisms can fossilise in special circumstances: the Ediacaran biota is a good example.[2]
12
+
13
+ The best-known fossils for the general public are those of the giant, prehistoric dinosaurs. The fossilized bones and fossilized tracks of these huge, ancient reptiles can be seen in many museums of natural history and earth science.
14
+
15
+ The study of fossils by geologists and biologists is known as paleontology. If the study puts living things in their ecological context it is called paleobiology.
16
+
17
+ There are some sites where fossils have been found with remarkable details, or in large numbers. Palaeontologists call these sites by the German term Lagerstätten. The La Brea tar pits in Los Angeles is such a place. So are the Solnhofen limestone quarries in Bavaria.
18
+
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+ Microscopic or very tiny fossils are called "microfossils"; while larger, macroscopic fossils — such as those of seashells and mammals — are called "macrofossils". Natural stones which look like fossilized organisms, but are not fossils at all, are called "pseudofossils".
20
+
21
+ Although most fossils are formed from the hard parts of organisms, there are also indirect signs of prehistoric life. Examples such as a worm's trail or an animal's footprint are quite common. They are known as trace fossils. Fossilized excrement, faeces or dung is known as a coprolite. Chemical traces of prehistoric organisms is called a chemofossil. Objects made by prehistoric people are called artifacts.
22
+
23
+ Even when the remains of soft-bodied animals are gone, there may be impressions, molds or carbon traces which remain permanently. So, in special cases, we do have fossils even of small, soft invertebrate animals.
24
+
25
+ Sometimes a fossil is produced as a result of dryness (desiccation), freezing, or pine resin. Mummified animals, ice-covered wooly mammoths, and insect-filled amber are examples of such fossils.
26
+
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+ Living fossils, however, are not fossils at all. Instead, they are modern-day organisms which very closely resemble their prehistoric ancestors of many millions of years ago. The ginkgo tree, the coelacanth and the horseshoe crab are good examples.
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+
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+ Many pre-scientific peoples noticed fossils, but not all thought they were the remains of living things. Perhaps the first to leave a record of his thought was the Ancient Greek philosopher Xenophanes (about 570BC–470BC).[3]p387 His ideas were reported by later writers:
30
+
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+ These ideas were rediscovered in the 17th century in Europe. Nicolas Steno in the Netherlands and Robert Hooke at the Royal Society in London both wrote and gave lectures about fossils. In the 18th century fossil-collecting began, and serious thinking on geology began to make progress. In the 19th century geology became a modern science, and fossils played a part in the theory of evolution.
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1
+ Lightning is a powerful electrical discharge made during a thunderstorm. The electric current makes the air very hot. The suddenly heated air expands very quickly, which causes thunder. Sometimes lightning happens between clouds. Sometimes (in the rain) lighting goes from cloud to ground. If it goes from cloud to ground, it can strike a person. Around 2000 people are struck by lightning each year. About 50 to 100 lightning bolts strike the Earth every second.[1][2] Lightning has hit the Empire State Building as many as 500 times a year.
2
+
3
+ When lightning strikes, the surface rubs electrons from the lightning, and a spark of electricity shoots from the lightning to the surface. In a thunderstorm, the lower cloud has as many as 100 million volts of electricity.[1] This electricity is given out either within the cloud, to the ground, to another cloud, or into the air. Lightning has been known to travel from the ground upwards to the cloud. In 1993, scientists discovered lightning bolts that shot upward from the top of a cumulonimbus cloud.[1]
4
+
5
+ People can make and study lightning with a Tesla coil or a Van de Graaff Generator.
6
+
7
+ Benjamin Franklin experimented with electricity and was interested in lightning. He discovered many things about lightning. In 1772, he was the first to show that a thunderstorm lets out electricity.[1] In his book he suggested an experiment to test it. Joseph Priestley said that Franklin flew a kite to prove the presence of electricity in the storm, using a dry silk string to protect himself from the electricity in the wet hemp kitestring. [2]
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1
+
2
+
3
+ Martialinae
4
+
5
+ Leptanillinae
6
+
7
+ Amblyoponinae
8
+
9
+ Paraponerinae
10
+
11
+ Agroecomyrmecinae
12
+
13
+ Ponerinae
14
+
15
+ Proceratiinae
16
+
17
+ Ecitoninae‡
18
+
19
+ Aenictinae‡
20
+
21
+ Dorylini‡
22
+
23
+ Aenictogitoninae‡
24
+
25
+ Cerapachyinae‡*
26
+
27
+ Leptanilloidinae‡
28
+
29
+ Dolichoderinae
30
+
31
+ Aneuretinae
32
+
33
+ Pseudomyrmecinae
34
+
35
+ Myrmeciinae
36
+
37
+ Ectatomminae
38
+
39
+ Heteroponerinae
40
+
41
+ Myrmicinae
42
+
43
+ Formicinae
44
+
45
+ A phylogeny of the extant ant subfamilies.[2][3]
46
+ *Cerapachyinae is paraphyletic
47
+ ‡ The previous dorylomorph subfamilies were synonymized under Dorylinae by Brady et al. in 2014[4]
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+
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+ Ants are a kind of insect that live together in big groups. Scientists sometimes use the name Formicidae when talking about all of the different kinds of ants that have lived.[5][6]
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+
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+ Ants are a lot like wasps and bees. They all came from the same kind of animal a long time ago, but now they are different. There are about 22,000 different kinds of ants, but we only know of 12,500 for sure.[7][8][9] Every kind of ant has a thin part in the middle of their body and two long body parts on their heads called antennae.
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+
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+ Ants live in groups that can be big or small. Some kinds of ants live in small groups and eat other animals. Some ants work together in very big groups. These groups can have millions of ants in them that travel outside every day in a big area. Ants are small, but they are very strong. Some ants are strong enough to carry things that are as heavy as 20 ants. Some ants are called workers. Workers dig tunnels and carry food back to the colony so that other ants and the queen ant can eat.[10]
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+
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+ The groups that ants live in are called colonies. A colony has a female ant called a queen which lays eggs. Those eggs will grow into more ants. Big colonies of ants have different kinds of ants that grow from the eggs. These are called different castes of ants. Some are workers which do jobs like carrying and digging, and soldiers which fight other animals. Worker and solider ants are females. Another type of ant are drones which are male ants.[11]
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+ Really big ant colonies are sometimes called superorganisms. This means the ants work together so well that they are like little parts of one big animal. Ants cannot live by themselves for very long because they need to work with other ants.[12][13]
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+ Ants have colonies almost everywhere on planet Earth. Places that do not have ants are Antarctica because it's very cold and there's not much food, far away places that ants can't get to, or islands because there's not enough things that ants need there.
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+ The family Formicidae belongs to the order Hymenoptera, which also includes sawflies, bees and wasps. Ants evolved from a lineage within the vespoid wasps.
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+ Phylogenetic analysis suggests that ants arose in the Lower Cretaceous period about 110 to 130 million years ago, or even earlier. One estimate from DNA studies places the origin of ants at ≈140 million years ago (mya).[14] Another study puts it in the Jurassic at 185 ± 36 mya (95% confidence limits).[15]
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+ After the rise of flowering plants about 100 million years ago ants diversified. They became ecologically dominant about 60 million years ago.[16][17][18]
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+
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+ In 1966 E.O. Wilson and his colleagues identified the fossil remains of an ant (Sphecomyrma freyi) from the Cretaceous period. The specimen, trapped in amber dating back to more than 80 million years ago, has features of both ants and wasps.[19] Sphecomyrma was probably a ground forager but some suggest that primitive ants were likely to have been predators underneath the surface of the soil.
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+
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+ During the Cretaceous period, a few species of primitive ants ranged widely on the Laurasian super-continent (the northern hemisphere). They were scarce in comparison to other insects, representing about 1% of the insect population.
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+
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+ Ants became dominant after adaptive radiation at the beginning of the Cainozoic. By the Oligocene and Miocene ants had come to represent 20-40% of all insects found in major fossil deposits. Of the species that lived in the Eocene epoch, approximately one in ten genera survive to the present. Genera surviving today comprise 56% of the genera in Baltic amber fossils (early Oligocene), and 92% of the genera in Dominican amber fossils (apparently early Miocene).[16][20]p23
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+
73
+ Termites, though sometimes called white ants, are not ants and belong to the order Isoptera. Termites are actually more closely related to cockroaches and mantids. Termites are eusocial but differ greatly in the genetics of reproduction. The similar social structure is attributed to convergent evolution.[21] Velvet ants look like large ants, but are wingless female wasps.[22][23]
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+
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+ The life of an ant starts from an egg. If the egg is fertilised, the progeny will be female (diploid); if not, it will be male (haploid). Ants develop by complete metamorphosis with the larval stages passing through a pupal stage before emerging as an adult. The larva is fed and cared for by workers.
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+
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+ Food is given to the larvae by trophallaxis, a process in which an ant regurgitates liquid food held in its crop. This is also how adults share food, stored in the 'social stomach', among themselves.
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+
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+ Larvae may also be given solid food brought back by foraging workers, and may even be taken to captured prey in some species. The larvae grow through a series of moults and enter the pupal stage.[24]
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+ The differentiation into queens and workers (which are both female), and different castes of workers, is influenced in some species by the food the larvae get. Genetic influences, and the control of gene expression by the feeding are complex. The determination of caste is a major subject of research.[20]p351, 372[25]
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+
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+ A new worker spends the first few days of its adult life caring for the queen and young. It then does digging and other nest work, and later, defends the nest and forages. These changes are sometimes fairly sudden, and define what are called temporal castes. An explanation for the sequence is suggested by the high casualties involved in foraging, making it an acceptable risk only for ants that are older and are likely to die soon of natural causes.[26][27]
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+
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+ Most ant species have a system in which only the queen and breeding females can mate. Contrary to popular belief, some ant nests have multiple queens (polygyny). The life history of Harpegnathos saltator is
86
+ exceptional among ants because both queens and some workers
87
+ reproduce sexually.[28]
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+
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+ The winged male ants, called drones, emerge from pupae with the breeding females (although some species, like army ants, have wingless queens), and do nothing in life except eat and mate.
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+
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+ Most ants produce a new generation each year.[29] During the species specific breeding period, new reproductives, winged males and females leave the colony in what is called a nuptial flight. Typically, the males take flight before the females. Males then use visual cues to find a common mating ground, for example, a landmark such as a pine tree to which other males in the area converge. Males secrete a mating pheromone that females follow. Females of some species mate with just one male, but in some others they may mate with anywhere from one to ten or more different males.[20] Mated females then seek a suitable place to begin a colony. There, they break off their wings and begin to lay and care for eggs. The females store the sperm they obtain during their nuptial flight to selectively fertilise future eggs.
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+
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+ The first workers to hatch are weak and smaller than later workers, but they begin to serve the colony immediately. They enlarge the nest, forage for food and care for the other eggs. This is how new colonies start in most species. Species that have multiple queens may have a queen leaving the nest along with some workers to found a colony at a new site,[20]p143 a process akin to swarming in honeybees.
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+
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+ A wide range of reproductive strategies have been noted in ant species. Females of many species are known to be capable of reproducing asexually through parthenogenesis,[30] and one species, Mycocepurus smithii is known to be all-female.[31]
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+
97
+ Ant colonies can be long-lived. The queens can live for up to 30 years, and workers live from 1 to 3 years. Males, however, are more transitory, and survive only a few weeks.[32] Ant queens are estimated to live 100 times longer than solitary insects of a similar size.[33]
98
+
99
+ Ants are active all year long in the tropics but, in cooler regions, survive the winter in a state of dormancy or inactivity. The forms of inactivity are varied and some temperate species have larvae going into the inactive state (diapause), while in others, the adults alone pass the winter in a state of reduced activity.[34]
100
+
101
+ It may seem strange that ants have uses, but there are some. Some people use ants for food, medicine and rituals. Some species of ants are used for pest control (they eat pests that destroy food for humans). They can damage crops and enter buildings, though. Some species, like the red imported fire ant, live in places where they came to by complete accident.
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1
+
2
+
3
+ Martialinae
4
+
5
+ Leptanillinae
6
+
7
+ Amblyoponinae
8
+
9
+ Paraponerinae
10
+
11
+ Agroecomyrmecinae
12
+
13
+ Ponerinae
14
+
15
+ Proceratiinae
16
+
17
+ Ecitoninae‡
18
+
19
+ Aenictinae‡
20
+
21
+ Dorylini‡
22
+
23
+ Aenictogitoninae‡
24
+
25
+ Cerapachyinae‡*
26
+
27
+ Leptanilloidinae‡
28
+
29
+ Dolichoderinae
30
+
31
+ Aneuretinae
32
+
33
+ Pseudomyrmecinae
34
+
35
+ Myrmeciinae
36
+
37
+ Ectatomminae
38
+
39
+ Heteroponerinae
40
+
41
+ Myrmicinae
42
+
43
+ Formicinae
44
+
45
+ A phylogeny of the extant ant subfamilies.[2][3]
46
+ *Cerapachyinae is paraphyletic
47
+ ‡ The previous dorylomorph subfamilies were synonymized under Dorylinae by Brady et al. in 2014[4]
48
+
49
+ Ants are a kind of insect that live together in big groups. Scientists sometimes use the name Formicidae when talking about all of the different kinds of ants that have lived.[5][6]
50
+
51
+ Ants are a lot like wasps and bees. They all came from the same kind of animal a long time ago, but now they are different. There are about 22,000 different kinds of ants, but we only know of 12,500 for sure.[7][8][9] Every kind of ant has a thin part in the middle of their body and two long body parts on their heads called antennae.
52
+
53
+ Ants live in groups that can be big or small. Some kinds of ants live in small groups and eat other animals. Some ants work together in very big groups. These groups can have millions of ants in them that travel outside every day in a big area. Ants are small, but they are very strong. Some ants are strong enough to carry things that are as heavy as 20 ants. Some ants are called workers. Workers dig tunnels and carry food back to the colony so that other ants and the queen ant can eat.[10]
54
+
55
+ The groups that ants live in are called colonies. A colony has a female ant called a queen which lays eggs. Those eggs will grow into more ants. Big colonies of ants have different kinds of ants that grow from the eggs. These are called different castes of ants. Some are workers which do jobs like carrying and digging, and soldiers which fight other animals. Worker and solider ants are females. Another type of ant are drones which are male ants.[11]
56
+
57
+ Really big ant colonies are sometimes called superorganisms. This means the ants work together so well that they are like little parts of one big animal. Ants cannot live by themselves for very long because they need to work with other ants.[12][13]
58
+
59
+ Ants have colonies almost everywhere on planet Earth. Places that do not have ants are Antarctica because it's very cold and there's not much food, far away places that ants can't get to, or islands because there's not enough things that ants need there.
60
+
61
+ The family Formicidae belongs to the order Hymenoptera, which also includes sawflies, bees and wasps. Ants evolved from a lineage within the vespoid wasps.
62
+
63
+ Phylogenetic analysis suggests that ants arose in the Lower Cretaceous period about 110 to 130 million years ago, or even earlier. One estimate from DNA studies places the origin of ants at ≈140 million years ago (mya).[14] Another study puts it in the Jurassic at 185 ± 36 mya (95% confidence limits).[15]
64
+
65
+ After the rise of flowering plants about 100 million years ago ants diversified. They became ecologically dominant about 60 million years ago.[16][17][18]
66
+
67
+ In 1966 E.O. Wilson and his colleagues identified the fossil remains of an ant (Sphecomyrma freyi) from the Cretaceous period. The specimen, trapped in amber dating back to more than 80 million years ago, has features of both ants and wasps.[19] Sphecomyrma was probably a ground forager but some suggest that primitive ants were likely to have been predators underneath the surface of the soil.
68
+
69
+ During the Cretaceous period, a few species of primitive ants ranged widely on the Laurasian super-continent (the northern hemisphere). They were scarce in comparison to other insects, representing about 1% of the insect population.
70
+
71
+ Ants became dominant after adaptive radiation at the beginning of the Cainozoic. By the Oligocene and Miocene ants had come to represent 20-40% of all insects found in major fossil deposits. Of the species that lived in the Eocene epoch, approximately one in ten genera survive to the present. Genera surviving today comprise 56% of the genera in Baltic amber fossils (early Oligocene), and 92% of the genera in Dominican amber fossils (apparently early Miocene).[16][20]p23
72
+
73
+ Termites, though sometimes called white ants, are not ants and belong to the order Isoptera. Termites are actually more closely related to cockroaches and mantids. Termites are eusocial but differ greatly in the genetics of reproduction. The similar social structure is attributed to convergent evolution.[21] Velvet ants look like large ants, but are wingless female wasps.[22][23]
74
+
75
+ The life of an ant starts from an egg. If the egg is fertilised, the progeny will be female (diploid); if not, it will be male (haploid). Ants develop by complete metamorphosis with the larval stages passing through a pupal stage before emerging as an adult. The larva is fed and cared for by workers.
76
+
77
+ Food is given to the larvae by trophallaxis, a process in which an ant regurgitates liquid food held in its crop. This is also how adults share food, stored in the 'social stomach', among themselves.
78
+
79
+ Larvae may also be given solid food brought back by foraging workers, and may even be taken to captured prey in some species. The larvae grow through a series of moults and enter the pupal stage.[24]
80
+
81
+ The differentiation into queens and workers (which are both female), and different castes of workers, is influenced in some species by the food the larvae get. Genetic influences, and the control of gene expression by the feeding are complex. The determination of caste is a major subject of research.[20]p351, 372[25]
82
+
83
+ A new worker spends the first few days of its adult life caring for the queen and young. It then does digging and other nest work, and later, defends the nest and forages. These changes are sometimes fairly sudden, and define what are called temporal castes. An explanation for the sequence is suggested by the high casualties involved in foraging, making it an acceptable risk only for ants that are older and are likely to die soon of natural causes.[26][27]
84
+
85
+ Most ant species have a system in which only the queen and breeding females can mate. Contrary to popular belief, some ant nests have multiple queens (polygyny). The life history of Harpegnathos saltator is
86
+ exceptional among ants because both queens and some workers
87
+ reproduce sexually.[28]
88
+
89
+ The winged male ants, called drones, emerge from pupae with the breeding females (although some species, like army ants, have wingless queens), and do nothing in life except eat and mate.
90
+
91
+ Most ants produce a new generation each year.[29] During the species specific breeding period, new reproductives, winged males and females leave the colony in what is called a nuptial flight. Typically, the males take flight before the females. Males then use visual cues to find a common mating ground, for example, a landmark such as a pine tree to which other males in the area converge. Males secrete a mating pheromone that females follow. Females of some species mate with just one male, but in some others they may mate with anywhere from one to ten or more different males.[20] Mated females then seek a suitable place to begin a colony. There, they break off their wings and begin to lay and care for eggs. The females store the sperm they obtain during their nuptial flight to selectively fertilise future eggs.
92
+
93
+ The first workers to hatch are weak and smaller than later workers, but they begin to serve the colony immediately. They enlarge the nest, forage for food and care for the other eggs. This is how new colonies start in most species. Species that have multiple queens may have a queen leaving the nest along with some workers to found a colony at a new site,[20]p143 a process akin to swarming in honeybees.
94
+
95
+ A wide range of reproductive strategies have been noted in ant species. Females of many species are known to be capable of reproducing asexually through parthenogenesis,[30] and one species, Mycocepurus smithii is known to be all-female.[31]
96
+
97
+ Ant colonies can be long-lived. The queens can live for up to 30 years, and workers live from 1 to 3 years. Males, however, are more transitory, and survive only a few weeks.[32] Ant queens are estimated to live 100 times longer than solitary insects of a similar size.[33]
98
+
99
+ Ants are active all year long in the tropics but, in cooler regions, survive the winter in a state of dormancy or inactivity. The forms of inactivity are varied and some temperate species have larvae going into the inactive state (diapause), while in others, the adults alone pass the winter in a state of reduced activity.[34]
100
+
101
+ It may seem strange that ants have uses, but there are some. Some people use ants for food, medicine and rituals. Some species of ants are used for pest control (they eat pests that destroy food for humans). They can damage crops and enter buildings, though. Some species, like the red imported fire ant, live in places where they came to by complete accident.
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1
+
2
+
3
+ Fra Angelico (c. 1395– February 18, 1455), was an Italian Early Renaissance painter. Giorgio Vasari, who wrote the Lives of the Artists said he had "a rare and perfect talent".[1]
4
+
5
+ Fra Angelico has been known by many different names. When he was born, he was called Guido di Pietro. People who knew him when he was older called him Fra Giovanni da Fiesole (Brother John from Fiesole). When Giorgio Vasari wrote about him in Lives of the Artists, in the 1500s, he was already known as Fra Giovanni Angelico (Brother Giovanni who is like an Angel).[2]
6
+
7
+ The Italians usually call him il Beato Angelico (the Blessed Angelico). He has been called this for a long time, because he was thought to be blessed by God who gave him the talent of painting, and also because he was such a good and holy man.[3] The name "Blessed Angelico" has now been made official, because in 1982 Pope John Paul II "conferred beatification" which means that he is now on the way to being made a saint.[4]
8
+
9
+ Vasari says about him: "It is impossible to think of enough good things to say about this holy father, who was so humble and modest in everything that he did and said, and whose pictures were painted with such cleverness and holy faith."[1]
10
+
11
+ Fra Angelico was born in Mugello near Fiesole in Tuscany, Italy probably about 1385–87 and died in Rome in 1455.[5] Nothing is known about his parents. He was baptized Guido or Guidolino.
12
+
13
+ In 1407, he joined the Dominican Order at Fiesole.[5] In 1423, when he became officially a friar, he changed his name from Guido to Fra Giovanni (Brother John). (People who are accepted into a holy order, usually take a new name.)[6] Like the other "brothers" (friars) of the Dominican Order, he wore a white robe and a black cloak, and shaved part of his head.
14
+
15
+ Fra Angelico had a brother called Benedetto who was also a Dominican friar. Fra Benedetto painted illuminated manuscripts. Fra Angelico possibly learnt to paint manuscripts as well. The convent of San Marco in Florence has several manuscript books that he is thought to have painted. He was very busy with other work at the convents where he lived, but he still found time to paint pictures, which very soon became famous. In January and February of 1418, he was paid for paintings that he did in the church of Santo Stefano del Ponte.[7]
16
+
17
+ Between 1418 and 1436, Fra Angelico painted an altarpiece for the church in Fiesole, which has been damaged.[8] Age caused the some of the paint to come off, or fade, and other artists have painted over some of Fra Angelico's work while trying to repair the paintings.[9] The top part of the altarpiece is in the National Gallery, London. It shows Christ in Glory, surrounded by more than 250 figures, and is a large and magnificent piece of work. It has been described as one of the best works in the gallery.[9]
18
+
19
+ In 1436, a new Dominican Convent of San Marco was established in Florence in some older monastery buildings. Fra Angelico was one of the friars from Fiesole who moved to Florence. This was an important move for Fra Angelico because Florence already had a great number of artists from whom he could learn. The convent had a very wealthy "patron of the arts" called Cosimo de' Medici who loved to buy works of art for himself and his favourite churches.[10] Cosimo took the largest of the friars' rooms, called cells, at the convent so that he could have a quiet place for religious thought.[11] Fra Angelico painted a picture showing the Magi at Bethlehem on the wall of Cosimo's cell.[11]
20
+
21
+ Cosimo employed Fra Angelico to paint more pictures for the convent. All the cells for the friars were built upstairs around the sides of a square courtyard with a garden in the middle (called a cloister). On the wall at the top of the stairs, Fra Angelico painted a fresco of the Angel Gabriel announcing the birth of Jesus to the Blessed Virgin Mary. This is one of his most famous pictures. Fra Angelico then began to paint a picture in each of the monk's cells. Each cell has large picture with a round top on the wall beside the window.[1] At least six of these paintings were done be by Fra Angelico, and others were done by artists who copied his style of painting.[11] These pictures were to help the friars with their prayers.
22
+
23
+ In 1439, he finished one of his most famous works, which is the altarpiece for San Marco's Church, which is where the friars worship. It shows the Madonna and Child on a throne, surrounded by saints from different dates, who are all grouped together as if they were standing in a room in Heaven, talking about holy things. This type of painting called a "Sacred Conversation" later became very popular, but this is one of the first ones.[12]
24
+
25
+ In 1445, Pope Eugenius IV sent a message for Fra Angelico to come to Rome to paint the frescoes of the Chapel of the Holy Sacrament at St Peter's. The chapel was later demolished by Pope Paul III to make way for the new St.Peter's Basilica and Fra Angelico's work was lost.[13] Vasari says that one of the popes (it might have been Eugenius or Pope Nichoas V) asked Fra Angelico if he would like the very important job of Archbishop of Florence. But Fra Angelico did not want such a high job and he suggested the name of another friar for the position. In 1447 Fra Angelico went to the city of Orvieto with his pupil, Benozzo Gozzoli, to paint some pictures for the Cathedral there . One of his other pupils was called Zanobi Strozzi, but he did not become as famous as Benozzo.[14]
26
+
27
+ From 1447 to 1449, Fra Angelico was back at the Vatican, where Pope Nicholas V had built a small chapel where he could pray privately. The pictures that Fra Angelico and his pupils painted there are the lives of two young saints St. Stephen and St. Lawrence, who were both "martyrs" (they were killed because of their Christian faith). The small chapel, with its bright colours and gold leaf decorations is like a jewel box. From 1449 until 1452, Fra Angelico was back at his old convent of Fiesole, where he was the Prior (the head man). Fra Angelico's pupils were probably left in Rome to finish the work on the chapel.[1][15]
28
+
29
+ In 1455, Fra Angelico went back to Rome, probably to look at the work in Pope Nicholas' Chapel. He died at the Dominican Convent and was buried in the church of Santa Maria sopra Minerva.[1][15][16] Pope John Paul II beatified Fra Angelico on October 3, 1982, making him officially known as the "Blessed Angelico". In 1984 the pope made him the patron of Catholic artists.[4]
30
+
31
+ Fra Angelico never wanted to be important, and even though he was so talented he never put himself above other people. He thought his most important job was caring for others. He always prayed before he picked up his brushes to paint, and he never made any changes to his pictures later, because he believed that the Holy Spirit was guiding him. He painted a great number of scenes of the Crucifixion and he would always cry while he was painting them.[15]
32
+
33
+ The words on his grave say:
34
+
35
+ Fra Angelico was working at a time when the style of painting was in a state of change. The changes had begun a hundred years before his time with the works of Giotto. Fra Angelico would have seen the famous pictures of the "Life of Saint Francis" that Giotto did for the church of Santa Croce in Florence. In Giotto's paintings the figures look more real and solid and lifelike than in the pictures of other painters of the 1300s. Giotto was also very good at painting the emotions on peoples faces and the actions that showed how they were feeling. His work was a big influence on every artist who saw it.[12]
36
+
37
+ At the same time, rich patrons like Cosimo de Medici liked to show off their wealth. They often did this by ordering paintings that had lots of bright colour and real gold backgrounds. The red colour called "vermilion" was one of the most expensive. But the most expensive colour was a beautiful blue made by grinding up a semi-precious stone called Lapis lazuli. This type of painting is called "International Gothic". Some artists of Fra Angelico's day were expert at doing paintings that would make very rich people happy. But other painters, like Masaccio were followers of Giotto and painted in a very plain way.[18]
38
+
39
+ Fra Angelico was able to paint in both ways. If the Pope or a rich family wanted an altarpiece or a fresco that had gold and expensive bright colours, then Fra Angelico could do it. But his most famous paintings have no gold and no bright colours. They are the simple gentle paintings of the life of Jesus that he did for the friars in their cells at San Marcos.
40
+
41
+ This gallery shows stories from the life of Jesus. The square paintings are in tempera. They are all parts of a big altarpiece and are about 25 cm wide. The "tondo" (round painting) is a small altarpiece about 1.4 metres wide. All the paintings with arched tops are frescos and were painted for the Dominican brothers.
42
+
43
+ Annunciation (c. 1450)
44
+
45
+ The Naming of St. John the Baptist (1434 – 1435)
46
+
47
+ The Nativity
48
+
49
+ The Adoration of the Magi, the Cook Tondo.
50
+
51
+ The Flight into Egypt (c.1450)
52
+
53
+ Baptism of Christ (c.1437 – 1446)
54
+
55
+ The Transfiguration
56
+
57
+ Capture of Christ (c.1437 – 1446)
58
+
59
+ Christ Being Nailed to the Cross (c.1437 – 1446)
60
+
61
+ Christ on the Cross between the Two Thieves (c.1437 – 1446)
62
+
63
+ The Deposition (c.1437 – 1446)
64
+
65
+ Mary Magdalene sees the risen Christ (c.1437 – 1446)
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1
+ A fraction is a number that shows how many equal parts there are. When we write fractions, we show one number with a line above another number, for example,
2
+
3
+
4
+
5
+
6
+
7
+
8
+ 1
9
+ 4
10
+
11
+
12
+
13
+
14
+
15
+ {\displaystyle {\tfrac {1}{4}}}
16
+
17
+ or 1⁄4 or 1/4. The top number tells us how many parts there are, the second number tells us the total number of parts.
18
+
19
+ The top part of the fraction is called a numerator. The bottom part of the fraction is called a denominator. For example,
20
+
21
+
22
+
23
+
24
+
25
+
26
+ 1
27
+ 4
28
+
29
+
30
+
31
+
32
+
33
+ {\displaystyle {\tfrac {1}{4}}}
34
+
35
+ : The 1 is the numerator here, and the 4 is the denominator.
36
+
37
+ A fraction is a mathematical expression relating two quantities or numbers, one divided by the other. The numbers may be whole numbers (or integers) – this is a rational number. For example,
38
+
39
+
40
+
41
+
42
+
43
+
44
+ 1
45
+ 2
46
+
47
+
48
+
49
+
50
+
51
+ {\displaystyle {\tfrac {1}{2}}}
52
+
53
+ is a fraction. They can also be polynomials – this is a rational function.
54
+
55
+ Mathematically, a fraction is a quotient of numbers, representing the number's value when the numerator is divided by the denominator (lower number). Thus
56
+
57
+
58
+
59
+
60
+
61
+
62
+ 1
63
+ 2
64
+
65
+
66
+
67
+
68
+
69
+ {\displaystyle {\tfrac {1}{2}}}
70
+
71
+ means one divided by two, or, in decimals, 0.5.
72
+
73
+ To find
74
+
75
+
76
+
77
+
78
+
79
+
80
+ 1
81
+ 2
82
+
83
+
84
+
85
+
86
+
87
+ {\displaystyle {\tfrac {1}{2}}}
88
+
89
+ of
90
+
91
+
92
+
93
+
94
+
95
+
96
+ 1
97
+ 2
98
+
99
+
100
+
101
+
102
+
103
+ {\displaystyle {\tfrac {1}{2}}}
104
+
105
+ , the denominators are multiplied. That means: denominator 2 multiplied by 2 equals 4 or:
106
+
107
+
108
+
109
+
110
+
111
+
112
+ 1
113
+ 2
114
+
115
+
116
+
117
+
118
+
119
+ {\displaystyle {\tfrac {1}{2}}}
120
+
121
+ x
122
+
123
+
124
+
125
+
126
+
127
+
128
+ 1
129
+ 2
130
+
131
+
132
+
133
+
134
+
135
+ {\displaystyle {\tfrac {1}{2}}}
136
+
137
+ =
138
+
139
+
140
+
141
+
142
+
143
+
144
+ 1
145
+ 4
146
+
147
+
148
+
149
+
150
+
151
+ {\displaystyle {\tfrac {1}{4}}}
152
+
153
+ or: 0.5 x 0.5 = 0.25.
154
+
155
+ (In this case “
156
+
157
+
158
+
159
+
160
+
161
+
162
+ 1
163
+ 2
164
+
165
+
166
+
167
+
168
+
169
+ {\displaystyle {\tfrac {1}{2}}}
170
+
171
+ of” means mathematically "multiplication".)
172
+
173
+ To find
174
+
175
+
176
+
177
+
178
+
179
+
180
+ 1
181
+ 2
182
+
183
+
184
+
185
+
186
+
187
+ {\displaystyle {\tfrac {1}{2}}}
188
+
189
+ divided by
190
+
191
+
192
+
193
+
194
+
195
+
196
+ 1
197
+ 2
198
+
199
+
200
+
201
+
202
+
203
+ {\displaystyle {\tfrac {1}{2}}}
204
+
205
+ , multiply
206
+
207
+
208
+
209
+
210
+
211
+
212
+ 1
213
+ 2
214
+
215
+
216
+
217
+
218
+
219
+ {\displaystyle {\tfrac {1}{2}}}
220
+
221
+ by the reciprocal of
222
+
223
+
224
+
225
+
226
+
227
+
228
+ 1
229
+ 2
230
+
231
+
232
+
233
+
234
+
235
+ {\displaystyle {\tfrac {1}{2}}}
236
+
237
+ , which is 2. That answer is 1.
238
+
239
+ The numerator is multiplied by the other numerator. The denominator is multiplied by the other denominator.
240
+ E.g. 2⁄4 x 3⁄4 = 6⁄16 you can simplify
241
+ this by dividing both the numbers by a common factor.This would be 3⁄8
242
+
243
+
244
+
ensimple/2056.html.txt ADDED
@@ -0,0 +1,244 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ A fraction is a number that shows how many equal parts there are. When we write fractions, we show one number with a line above another number, for example,
2
+
3
+
4
+
5
+
6
+
7
+
8
+ 1
9
+ 4
10
+
11
+
12
+
13
+
14
+
15
+ {\displaystyle {\tfrac {1}{4}}}
16
+
17
+ or 1⁄4 or 1/4. The top number tells us how many parts there are, the second number tells us the total number of parts.
18
+
19
+ The top part of the fraction is called a numerator. The bottom part of the fraction is called a denominator. For example,
20
+
21
+
22
+
23
+
24
+
25
+
26
+ 1
27
+ 4
28
+
29
+
30
+
31
+
32
+
33
+ {\displaystyle {\tfrac {1}{4}}}
34
+
35
+ : The 1 is the numerator here, and the 4 is the denominator.
36
+
37
+ A fraction is a mathematical expression relating two quantities or numbers, one divided by the other. The numbers may be whole numbers (or integers) – this is a rational number. For example,
38
+
39
+
40
+
41
+
42
+
43
+
44
+ 1
45
+ 2
46
+
47
+
48
+
49
+
50
+
51
+ {\displaystyle {\tfrac {1}{2}}}
52
+
53
+ is a fraction. They can also be polynomials – this is a rational function.
54
+
55
+ Mathematically, a fraction is a quotient of numbers, representing the number's value when the numerator is divided by the denominator (lower number). Thus
56
+
57
+
58
+
59
+
60
+
61
+
62
+ 1
63
+ 2
64
+
65
+
66
+
67
+
68
+
69
+ {\displaystyle {\tfrac {1}{2}}}
70
+
71
+ means one divided by two, or, in decimals, 0.5.
72
+
73
+ To find
74
+
75
+
76
+
77
+
78
+
79
+
80
+ 1
81
+ 2
82
+
83
+
84
+
85
+
86
+
87
+ {\displaystyle {\tfrac {1}{2}}}
88
+
89
+ of
90
+
91
+
92
+
93
+
94
+
95
+
96
+ 1
97
+ 2
98
+
99
+
100
+
101
+
102
+
103
+ {\displaystyle {\tfrac {1}{2}}}
104
+
105
+ , the denominators are multiplied. That means: denominator 2 multiplied by 2 equals 4 or:
106
+
107
+
108
+
109
+
110
+
111
+
112
+ 1
113
+ 2
114
+
115
+
116
+
117
+
118
+
119
+ {\displaystyle {\tfrac {1}{2}}}
120
+
121
+ x
122
+
123
+
124
+
125
+
126
+
127
+
128
+ 1
129
+ 2
130
+
131
+
132
+
133
+
134
+
135
+ {\displaystyle {\tfrac {1}{2}}}
136
+
137
+ =
138
+
139
+
140
+
141
+
142
+
143
+
144
+ 1
145
+ 4
146
+
147
+
148
+
149
+
150
+
151
+ {\displaystyle {\tfrac {1}{4}}}
152
+
153
+ or: 0.5 x 0.5 = 0.25.
154
+
155
+ (In this case “
156
+
157
+
158
+
159
+
160
+
161
+
162
+ 1
163
+ 2
164
+
165
+
166
+
167
+
168
+
169
+ {\displaystyle {\tfrac {1}{2}}}
170
+
171
+ of” means mathematically "multiplication".)
172
+
173
+ To find
174
+
175
+
176
+
177
+
178
+
179
+
180
+ 1
181
+ 2
182
+
183
+
184
+
185
+
186
+
187
+ {\displaystyle {\tfrac {1}{2}}}
188
+
189
+ divided by
190
+
191
+
192
+
193
+
194
+
195
+
196
+ 1
197
+ 2
198
+
199
+
200
+
201
+
202
+
203
+ {\displaystyle {\tfrac {1}{2}}}
204
+
205
+ , multiply
206
+
207
+
208
+
209
+
210
+
211
+
212
+ 1
213
+ 2
214
+
215
+
216
+
217
+
218
+
219
+ {\displaystyle {\tfrac {1}{2}}}
220
+
221
+ by the reciprocal of
222
+
223
+
224
+
225
+
226
+
227
+
228
+ 1
229
+ 2
230
+
231
+
232
+
233
+
234
+
235
+ {\displaystyle {\tfrac {1}{2}}}
236
+
237
+ , which is 2. That answer is 1.
238
+
239
+ The numerator is multiplied by the other numerator. The denominator is multiplied by the other denominator.
240
+ E.g. 2⁄4 x 3⁄4 = 6⁄16 you can simplify
241
+ this by dividing both the numbers by a common factor.This would be 3⁄8
242
+
243
+
244
+
ensimple/2057.html.txt ADDED
@@ -0,0 +1,244 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ A fraction is a number that shows how many equal parts there are. When we write fractions, we show one number with a line above another number, for example,
2
+
3
+
4
+
5
+
6
+
7
+
8
+ 1
9
+ 4
10
+
11
+
12
+
13
+
14
+
15
+ {\displaystyle {\tfrac {1}{4}}}
16
+
17
+ or 1⁄4 or 1/4. The top number tells us how many parts there are, the second number tells us the total number of parts.
18
+
19
+ The top part of the fraction is called a numerator. The bottom part of the fraction is called a denominator. For example,
20
+
21
+
22
+
23
+
24
+
25
+
26
+ 1
27
+ 4
28
+
29
+
30
+
31
+
32
+
33
+ {\displaystyle {\tfrac {1}{4}}}
34
+
35
+ : The 1 is the numerator here, and the 4 is the denominator.
36
+
37
+ A fraction is a mathematical expression relating two quantities or numbers, one divided by the other. The numbers may be whole numbers (or integers) – this is a rational number. For example,
38
+
39
+
40
+
41
+
42
+
43
+
44
+ 1
45
+ 2
46
+
47
+
48
+
49
+
50
+
51
+ {\displaystyle {\tfrac {1}{2}}}
52
+
53
+ is a fraction. They can also be polynomials – this is a rational function.
54
+
55
+ Mathematically, a fraction is a quotient of numbers, representing the number's value when the numerator is divided by the denominator (lower number). Thus
56
+
57
+
58
+
59
+
60
+
61
+
62
+ 1
63
+ 2
64
+
65
+
66
+
67
+
68
+
69
+ {\displaystyle {\tfrac {1}{2}}}
70
+
71
+ means one divided by two, or, in decimals, 0.5.
72
+
73
+ To find
74
+
75
+
76
+
77
+
78
+
79
+
80
+ 1
81
+ 2
82
+
83
+
84
+
85
+
86
+
87
+ {\displaystyle {\tfrac {1}{2}}}
88
+
89
+ of
90
+
91
+
92
+
93
+
94
+
95
+
96
+ 1
97
+ 2
98
+
99
+
100
+
101
+
102
+
103
+ {\displaystyle {\tfrac {1}{2}}}
104
+
105
+ , the denominators are multiplied. That means: denominator 2 multiplied by 2 equals 4 or:
106
+
107
+
108
+
109
+
110
+
111
+
112
+ 1
113
+ 2
114
+
115
+
116
+
117
+
118
+
119
+ {\displaystyle {\tfrac {1}{2}}}
120
+
121
+ x
122
+
123
+
124
+
125
+
126
+
127
+
128
+ 1
129
+ 2
130
+
131
+
132
+
133
+
134
+
135
+ {\displaystyle {\tfrac {1}{2}}}
136
+
137
+ =
138
+
139
+
140
+
141
+
142
+
143
+
144
+ 1
145
+ 4
146
+
147
+
148
+
149
+
150
+
151
+ {\displaystyle {\tfrac {1}{4}}}
152
+
153
+ or: 0.5 x 0.5 = 0.25.
154
+
155
+ (In this case “
156
+
157
+
158
+
159
+
160
+
161
+
162
+ 1
163
+ 2
164
+
165
+
166
+
167
+
168
+
169
+ {\displaystyle {\tfrac {1}{2}}}
170
+
171
+ of” means mathematically "multiplication".)
172
+
173
+ To find
174
+
175
+
176
+
177
+
178
+
179
+
180
+ 1
181
+ 2
182
+
183
+
184
+
185
+
186
+
187
+ {\displaystyle {\tfrac {1}{2}}}
188
+
189
+ divided by
190
+
191
+
192
+
193
+
194
+
195
+
196
+ 1
197
+ 2
198
+
199
+
200
+
201
+
202
+
203
+ {\displaystyle {\tfrac {1}{2}}}
204
+
205
+ , multiply
206
+
207
+
208
+
209
+
210
+
211
+
212
+ 1
213
+ 2
214
+
215
+
216
+
217
+
218
+
219
+ {\displaystyle {\tfrac {1}{2}}}
220
+
221
+ by the reciprocal of
222
+
223
+
224
+
225
+
226
+
227
+
228
+ 1
229
+ 2
230
+
231
+
232
+
233
+
234
+
235
+ {\displaystyle {\tfrac {1}{2}}}
236
+
237
+ , which is 2. That answer is 1.
238
+
239
+ The numerator is multiplied by the other numerator. The denominator is multiplied by the other denominator.
240
+ E.g. 2⁄4 x 3⁄4 = 6⁄16 you can simplify
241
+ this by dividing both the numbers by a common factor.This would be 3⁄8
242
+
243
+
244
+
ensimple/2058.html.txt ADDED
@@ -0,0 +1,111 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ – on the European continent  (green & dark grey)– in the European Union  (green)
2
+
3
+
4
+
5
+ France (/ˈfræns/ (help·info) or /ˈfrɑːns/; French pronunciation: ​[fʁɑ̃s]), officially the French Republic (French: République française, French pronunciation: ​[ʁepyblik fʁɑ̃sɛz]), is a country whose metropolitan territory is located in Western Europe and that also comprises various overseas islands and territories located in other continents.[10] Metropolitan France extends from the Mediterranean Sea to the English Channel and the North Sea, and from the Rhine to the Atlantic Ocean. It is often referred to as L’Hexagone ("The Hexagon") because of the shape of its territory. France is a unitary semi-presidential republic with its main ideals expressed in the Declaration of the Rights of Man and of the Citizen.
6
+
7
+ Metropolitan France is bordered (clockwise from the north) by Belgium, Luxembourg, Germany, Switzerland, Italy, Monaco, Andorra, and Spain. France's overseas departments and collectivities also share land borders with Brazil and Suriname (bordering French Guiana), and the Netherlands Antilles (bordering Saint-Martin). France is linked to the United Kingdom by the Channel Tunnel, which passes underneath the English Channel.
8
+
9
+ France is the largest country in the European Union and the second largest in Europe. It has been one of the world's foremost powers for many centuries. During the 17th and 18th centuries, France colonized much of North America; during the 19th and early 20th centuries, France built one of the largest colonial empires of the time, including large portions of North, West and Central Africa, Southeast Asia, and many Pacific islands. France is a developed country and possesses the fifth largest economy[11] in the world, according to nominal GDP figures. It is the most visited country in the world, receiving 82 million foreign tourists annually.[12] France is one of the founding members of the European Union, and has the largest land area of all members. It is also a founding member of the United Nations, and a member of the Francophonie, the G8, NATO, and the Latin Union. It is one of the five permanent members of the United Nations Security Council and owns the largest number of nuclear weapons with active warheads and nuclear power plants in the European Union.
10
+
11
+ France's official language is French, also being official in 29 other countries. Some francophone countries include Haidi, Belgium, and Nigeria.
12
+
13
+ France is located in Western Europe.[13] France shares its borders with Belgium, Luxembourg, Germany, Switzerland, Italy, Monaco, Andorra, and Spain.[14] France has two mountain ranges near its borders: the Alps in the east and the Pyrenees in the south.[14] There are many rivers in France, including the Seine and the Loire.[15] In the north and the west of France, there are low hills and river valleys.
14
+
15
+ In France there are many different climates.[16] The Atlantic has a major effect on the weather in the north and west. This means the temperature is about the same most of the year. It is in the marine west coast climate region. In the east, winters are cold and the weather is good. Summers are hot and stormy. In the south, winters are cool and wet. Summers are hot and dry.[17] The north has a temperate climate similar to that of the United Kingdom and other Northern European countries.
16
+
17
+ France has the second-largest Exclusive Economic Zone (EEZ) in the world.[18] It covers 11,035,000 km2 (4,260,637 sq mi). Only the United States has a larger one .
18
+
19
+ The name "France" comes from the Latin word Francia ', which means "land of the Franks" or "Frankland".[19]
20
+
21
+ The borders of modern France are about the same as those of ancient Gaul. Celtic Gauls inhabited Ancient Gaul. Julius Caesar conquered Gaul for Rome in the 1st century BC.[20] Eventually, the Gauls adopted Roman speech (Latin, from which the French language evolved) and Roman culture. Christianity first appeared in the 2nd and 3rd centuries AD. It became firmly established by the fourth and fifth centuries.
22
+
23
+ In the 4th century AD, the Germanic tribes, principally the Franks invaded the Gauls. This is how the name Francie appeared. The modern name "France" comes from the name of the Capetian Kings of France around Paris. The Franks were the first tribe of Europe after the fall of the Roman Empire to convert to Christianity rather than Arianism. The French called themselves "the most Christian Kingdom of France".[21]
24
+
25
+ The Treaty of Verdun (843), divided Charlemagne's Empire into three parts.[22] The biggest area was Western Francia. It is similar to modern France.
26
+
27
+ The Carolingian dynasty ruled France until 987, when Hugh Capet became King of France. His descendants, the Direct Capetians, the House of Valois and the House of Bourbon, unified the country with many wars and dynastic inheritance. The monarchy was the most powerful during the 17th century and the reign of Louis XIV of France.[23] At that time, France had the largest population in Europe. The country had a big influence over European politics, economy, and culture. French became the common language of diplomacy in international affairs. Much of the Enlightenment happened in France. French scientists made big scientific discoveries in the 18th century. France also conquered many overseas possessions in the Americas and Asia.[24]
28
+
29
+ France had a monarchy until the French Revolution in 1789. The Great King Louis XVI and his wife, Marie Antoinette, were executed in 1793.[25] Thousands of other French citizens were killed. Napoleon Bonaparte took control of the Republic in 1799. He later made himself Emperor of the First Empire (1804–1814). His armies conquered most of continental Europe.[26] The metric system was invented by French scientists during the French revolution.That time 3 estates were developed.
30
+
31
+ After Napoleon's final defeat in 1815 at the Battle of Waterloo, another monarchy arose. Later Louis-Napoléon Bonaparte created the Second Empire in 1852. Louis-Napoléon was removed after the defeat in the Franco-Prussian war of 1870. The Third Republic replaced his regime.[27]
32
+
33
+ The large French colonial empire in the 19th century included parts of West Africa and Southeast Asia. The culture and politics of these regions were influenced by France. Many ex-colonies officially speak the French language.[28]
34
+
35
+ The country actively took part in both the First and Second World Wars, with battles taking place on its soil. During the First World War, millions were killed in the trenches including over a million in the Battle of the Somme.[29] The conditions were extremely difficult for the soldiers on the front. The last surviving veteran was Pierre Picault who died on 20 November 2008 at the age of 109.[30]
36
+ During the Second World War, Nazis occupied France. The Allies landed in Normandy on 6 June 1944 and began the Battle of Normandy. German forces lost France in just a few months.
37
+
38
+ The 13 regions and 96 departments of metropolitan France includes Corsica (Corse, lower right). The Paris area is expanded. France is divided into (administrative) regions. 22 of them are in Metropolitan France:
39
+
40
+ Corsica has a different status than the other 12 metropolitan regions. It is called collectivité territoriale.
41
+
42
+ France also has five overseas regions:
43
+
44
+ These four overseas regions have the same status as the metropolitan ones. They are like the overseas American states of Alaska and Hawaii.
45
+
46
+ Then France is divided into 101 departments. The departments are divided into 342 arrondissements. The arrondissements are re-divided into 4,032 cantons. The smallest subdivision is the commune (there are 36,699 communes). On January 1, 2008, INSEE counted 36,781 communes in France. 36,569 of them are in metropolitan France and 212 of them are in overseas France.[31][32]
47
+
48
+ The government of France is a semi-presidential system determined by the French Constitution of the French Fifth Republic.[33] The constitution declares the nation to be "an indivisible, secular, democratic, and social Republic". It provides for a separation of powers.[34]
49
+
50
+ The French armed forces are divided into four branches:
51
+
52
+ France has about 359,000 military personnel.[35][36] France spends 2.6% of its gross domestic product (GDP) on defense. This is the highest in the European Union. France and the UK spend 40% of the EU defence budget. About 10% of France's defence budget is for its nuclear weapons force.
53
+
54
+ France is a member of the United Nations.[37] It is a permanent member of the United Nations Security Council and has veto rights.[38] It is also a member of the World Trade Organisation (WTO). It hosts the headquarters of the OECD, UNESCO and Interpol. In 1953, the United Nations asked France to choose a coat of arms to represent them internationally. The French emblem is now on their passports.
55
+
56
+ France was a founding member of the European Union.[39] In the 1960s, France wanted to exclude the United Kingdom from the organisation. It wanted to build its own economic power in continental Europe. France and Germany became closer after World War II. This was to try to become the most influential country in the EU. It limited the influence of the new Eastern European members. France is a member of the North Atlantic Treaty Organisation (NATO).[40] However, under President de Gaulle, it left the joint military command. In the early 1990s, France received criticism for its underground nuclear tests in French Polynesia. France vigorously opposed the 2003 invasion of Iraq.[41] France retains strong political and economic influence in its former African colonies. For instance it has supplied economic aid and troops for peace-keeping missions in the Ivory Coast and Chad.
57
+
58
+ France is a member of the G8 group of leading industrialised countries. France has the eighth-largest economy in the world by Gross domestic product (GDP) (which takes into account how much it costs to live in different countries and inflation rates).[42] France and 11 other European Union members jointly launched the euro on 1 January 1999 and started using it in 2002.[43]
59
+
60
+ France's economy has nearly 2.9 million registered companies.[44] The government has a considerable influence over railway, electricity, aircraft, and telecommunications firms (as it owns big companies like SNCF and EDF (French electricity)).[45] France has an important aerospace (design of aircraft and spacecraft) industry led by Airbus.[46] It can also launch rockets from French Guiana.[47]
61
+
62
+ France has invested a lot in nuclear power. This made France the smallest producer of carbon dioxide among the seven most industrialised countries in the world.[48] As a result, 59 nuclear power plants generate most of the electricity produced in the country (78% in 2006,[49] up from only 8% in 1973, 24% in 1980, and 75% in 1990).
63
+
64
+ France is the leading agricultural producer and exporter in Europe.[50] France exports wheat, poultry, dairy products, beef, and pork. It is also famous for its wine industry. France received 10 billion euros in 2006 from the European Community as subsidies to its farmers.[51]
65
+
66
+ At one time, the Factory Act of 1833 limited the workday for women and children to 11 hours a day.[52]
67
+
68
+ On 1 January 2008, it was estimated that 63.8 million people live in France, including in the Overseas Regions of France.[53] 61,875,000 of these live in metropolitan France, the part of the country that is within Europe.[53]
69
+
70
+ The major ethnic groups living in France today are descended from Celtic people and Roman people.[54] The significant minority groups living in France are:
71
+
72
+ French is the official language of France. It belongs to the Romance language group, which includes Italian and Spanish. Many regional dialects are also used in France. Alsatian, a German dialect, is spoken in Alsace and in parts of Lorraine in eastern France. French was the language of diplomacy and culture in Europe between the 17th and 19th century and is still widely used.[55]
73
+
74
+ Some people in France also speak Basque, Breton, Catalan, Corsican, German, Flemish, and Occitan.
75
+
76
+ France is a secular country and the constitution guarantees freedom of religion.[56] The population is about 51% Roman Catholic, and 31% of people are agnostics or atheists. 5% are Muslim, 3% say they are Protestant and 1% say they are Jewish. 10% are from other religions or do not have an opinion about religion.[57][58] There are also Zoroastrian, Unitarian Universalist, Jain and Wiccan communities. Religions founded in France include Raelism.
77
+
78
+ According to a Poll in 2007:[59]
79
+
80
+ French literature began in the Middle Ages.[60] French was divided into several dialects at the time. Some authors spelled words differently from one other.
81
+
82
+ During the 17th century, Pierre Corneille, Jean Racine, Molière, Blaise Pascal and René Descartes were the main authors.[61]
83
+
84
+ In the 18th and 19th centuries, French literature and poetry reached its best. The 18th century saw writings of authors, essayists and moralists as Voltaire and Jean-Jacques Rousseau.
85
+ As for French children's literature in those times, Charles Perrault wrote stories such as "Little Red Riding Hood", "Beauty and the Beast", "Sleeping Beauty" and "Puss in Boots".[62]
86
+
87
+ Many famous French novels were written in the 19th century by authors such as Victor Hugo, Alexandre Dumas and Jules Verne. They wrote popular novels like The Three Musketeers, The Count of Monte-Cristo, Twenty Thousand Leagues Under the Sea, The Hunchback of Notre-Dame and Les Misérables. Other 19th century fiction writers include Emile Zola, Guy de Maupassant, Théophile Gautier and Stendhal.[63]
88
+
89
+ Famous novels were written during the 20th century by Marcel Proust, Antoine de Saint-Exupéry, Albert Camus, Jean-Paul Sartre and Michel Houellebecq.
90
+
91
+ The Tour de France cycling race in July is one of the best-known sporting events.[64] It is a three-week race of around 3,500 km that covers most of France and ends in the centre of Paris, on the Avenue des Champs-Elysées. Football is another popular sport in France. The French team won the FIFA World Cup in 1998 and 2018. They also won the UEFA European Football Championship in 1984 and 2000. France also hosts the 24 Hours of Le Mans car race. France also hosted the Rugby World Cup in 2007 and finished fourth.[65]
92
+ France is closely associated with the Modern Olympic Games. At the end of the 19th century, the Baron Pierre de Coubertin suggested having the Olympic Games again. France hosted the Summer Olympics twice, in 1900 and 1924, in Paris. France will host the Summer Olympics in 2024, in Paris. France also hosted the Winter Games three times: in 1924 in Chamonix, in 1968 in Grenoble, and in 1992 in Albertville.
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+
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+ French cuisine has influenced the style of cooking throughout Europe, and its chefs work in restaurants throughout the world.[66]
95
+
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+ The roots of modern haute cuisine lie in chefs like La Varenne (1615–1678) and the notable chef of Napoleon, Marie-Antoine Carême (1784–1833). These chefs developed a lighter style of food compared to the food of the Middle Ages. They used fewer spices, and more herbs and creamy ingredients.
97
+
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+ Typical ingredients like roux and fish stock, and techniques such as marinading, and dishes such as ragout, were invented. Carême was an expert pâtissier (pastry-maker), and this is still a mark of French cooking. He developed basic sauces, his 'mother sauces'; he had over a hundred sauces in his repertoire, based on the half-dozen mother sauces.
99
+
100
+ French cuisine was introduced in the 20th century by Georges Auguste Escoffier (1846–1935). He was a genius at organisation. He worked out how to run large restaurants, as in a big hotel or a palace; how the staff should be organised; how the menu was prepared. He had methods for everything. Escoffier's largest contribution was the publication of Le Guide Culinaire in 1903, which established the fundamentals of French cookery. Escoffier managed the restaurants and cuisine at the Savoy Hotel and Carlton Hotel in London, the Hôtel Ritz Paris, and some of the greatest cruise ships.
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+
102
+ Escoffier, however, left out much of the culinary character to be found in the regions of France.
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+ Gastro-tourism and the Guide Michelin helped to acquaint people with the rich bourgeois and peasant cuisine of the French countryside in the 20th century. Gascon cuisine has also had great influence over the cuisine in the southwest of France. Many dishes that were once regional have proliferated in variations across the country. Cheese and wine are a major part of the cuisine, playing different roles regionally and nationally.[67][68][69] In the north of France, people often prefer to use butter to cook. In the south, they prefer olive oil and garlic.[70] In France, each region has its own special dish; choucroute in Alsace, quiche in Lorraine, cassoulet in the Languedoc-Roussillon, and tapenade in Provence-Alpes-Côte d'Azur.
105
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106
+ In November 2010, French gastronomy was added by UNESCO to its lists of the world's 'intangible cultural heritage'.[71][72]
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+ France is the number one tourist destination in the world. In 2007, 81.9 million foreign tourists visited France.[73] Spain comes second (58.5 million in 2006) and the United States come third (51.1 million in 2006).
109
+ Some of the most famous attractions in Paris, are the Eiffel Tower and the Arc de Triomphe. Another one is Mont Saint Michel, in Normandy.[74]
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+ A European Disneyland is located in a suburb east of Paris. The resort opened in 1992 and is also a popular tourist destination in Europe.
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1
+ Regions where it is an official language
2
+      Regions where it is a second language
3
+
4
+ French (French: français, pronounced "Fronce-eh") is a Romance language that was first spoken in France. It is also spoken in Belgium (Wallonia), Luxembourg, Quebec (Canada), Switzerland (Romandy) and many different countries in Africa (Francophone Africa). About 220 million people speak French as a native or a second language.[4] It has also been one of the roots of other languages such as the Haitian Creole language. Like the other Romance languages, its nouns have genders that are divided into masculine (masculin) and feminine (féminin) words.
5
+
6
+ In ancient times, the Celts lived in what is now France.[5] In those days, the land was called Gaul (Latin: Gallia). The Romans conquered Gallia and made it a province. Because the Romans spoke Latin, the local people learned Latin and began to speak it. Their own language, Gaulish, tended to be spoken less often, although Breton is a language still spoken today in the part of France called Brittany, that came from the old Celtic language.
7
+
8
+ French pronunciation, more so than other Romance languages, became radically different from Latin. After the Roman Empire fell and Germanic peoples swarmed the countryside, Vulgar Latin was changing quickly. In medieval France it changed into two dialects or languages: langue d'oc and langue d'oïl. They both mean "language of yes", because oc was the word for "yes" in the south, and oïl meant "yes" in the north. Today, the word for yes in French is oui, pronounced like "we".
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+
10
+ In 1635, France established the French Academy in order to standardize the French language. To this day, the academy establishes the rules for Standard French.
11
+
12
+ Langue d'oc is now called Occitan, and it is still spoken by many people in Southern France.
13
+
14
+ French uses the roman alphabet, like English. There are a few differences, because vowels can have three types of diacritics added on to them. These are the acute accent é; grave accent è and circumflex accent î. A cedilla can also be added onto a c to make ç.
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+
16
+ If a word ends with a consonant, this will usually not be pronounced unless the next word starts with a vowel. However, if the word is very short or the last consonant is a c, r, l or f, this is still pronounced.
17
+
18
+ Here are some examples of French words and sentences :
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+
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+ Many French words are like English words, because English took many words from the Norman language, a dialect of French influenced by Old Norse. This is despite the fact that scholars consider English to be a Germanic language like German. Words in different languages with the same meaning which are spelled similarly are called cognates. Most English words ending with "tion" and "sion" came from the French language. See below for more examples:
21
+
22
+ Aragonese  ·
23
+ Aromanian  ·
24
+ Arpitan  ·
25
+ Asturian or Bable  ·
26
+ Burgundian  ·
27
+ Catalan (Valencian, Balear)  ·
28
+ Champenois  ·
29
+ Corsican (Gallurese, Sassarese)  ·
30
+ Dalmatian  ·
31
+ Dgèrnésiais  ·
32
+ Emiliano-Romagnolo  ·
33
+ Fala  ·
34
+ Franc-Comtois  ·
35
+ French (with Cajun French, Quebec French)
36
+  · Friulian  ·
37
+ Galician  ·
38
+ Gallo  ·
39
+ Genoese  ·
40
+ Istriot  ·
41
+ Istro-Romanian  ·
42
+ Italian (Judeo-Italian)  ·
43
+ Jèrriais  ·
44
+ Ladin  ·
45
+ Ladino  ·
46
+ Leonese  ·
47
+ Ligurian (Monégasque)  ·
48
+ Lombard  ·
49
+ Lorrain  ·
50
+ Megleno-Romanian  ·
51
+ Mirandese  ·
52
+ Mozarabic  ·
53
+ Neapolitan  ·
54
+ Norman  ·
55
+ Occitan  ·
56
+ Picard  ·
57
+ Piedmontese  ·
58
+ Poitevin-Saintongeais  ·
59
+ Portuguese (with Brazilian Portuguese)  ·
60
+ Romanian (Moldovan, Vlach)  ·
61
+ Romansh  ·
62
+ Sardinian  ·
63
+ Sicilian  ·
64
+ Spanish (with Rioplatense Spanish)  ·
65
+ Shuadit  ·
66
+ Venetian  ·
67
+ Walloon  ·
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1
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+ Amphibians are members of the class Amphibia. The living ones are frogs (including toads), salamanders (including newts) and caecilians. They are four-legged vertebrates which are cold blooded.
4
+
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+ Amphibians lay their eggs in water, usually in a foam nest. After hatching they are tadpoles, which live in the water and have gills. The tadpoles change into adults in a process called metamorphosis. When they are adult, they have lungs to breathe instead of gills, and legs. Adult amphibians also use their skin to take in oxygen, and some species of salamanders do not have lungs.
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+
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+ The earliest amphibians evolved in the Devonian from lobe-finned fish which had jointed leg-like fins with digits. They could crawl along the sea bottom. Some had developed primitive lungs to help them breathe air when the stagnant pools of the Devonian swamps were low in oxygen. They could also use their strong fins to hoist themselves out of the water and onto dry land if necessary.[1][2]
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+
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+ For tens of millions of years, during the Carboniferous and early Permian, amphibia were top predators on land, especially in the low-lying tropical river systems. In drier conditions, they were less effective, and the ancestors of mammals and reptiles (the Synapsids and Sauropsids) gradually took over the land. They laid cleidoic eggs, which had hard shells, and could be laid out of water. Most of the early large amphibians went extinct in the Triassic period; a few survived to the Lower Cretaceous.[2]
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+
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+ The only living amphibiana today are the Lissamphibia. These include the Anura (frogs and toads), Caudata (salamanders and newts) and Gymnophiona (caecilians). They are all rather small, compared with mammals or reptiles. The smallest frog and vertebrate in the world is the New Guinea frog (Paedophryne amauensis). The biggest amphibian is the Chinese Giant Salamander (Andrias davidianus).
12
+
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+ Amphibia are found everywhere in the world, except Antarctica, and there are about 5,565 different species: 88% of them are in the Anura.[3] In number of species, they are more successful than mammals, though they occupy a smaller range of habitats. However, it is said that amphibian populations have been declining all over the world.[4] Conservation is therefore an important concern.
14
+
15
+ Amphibians like to live near freshwater in warm weather. There have also been species which live in forests, deserts and arctic conditions. Adult amphibians use lungs, and they also get oxygen through their skin, so long as it is moist.[5]
16
+
17
+ Amphibians may be camouflaged in brown and green, and if so they are prey for birds and reptiles. Their colour gives them camouflage, which is their main defence.
18
+
19
+ Alternatively, many other amphibia have toxic skin, which is harmful to predators. These are poisonous to eat. This is an important defence against predation. Connected to this is the use of warning colouration. They may be in vivid colours of red, black, and yellow. Research into the rough-skinned newt and the garter snake shows this is a typical case of co-evolution. Where they live in the same area, the newts get more poisonous, and the snakes develop more resistance to the poison.[6][7][8]
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+
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+ Amphibians have colour vision and depth of focus for clear sight. They also have eyelids, glands and ducts which keep the eyes moist. These are adaptations to life on land: amphibia were the first vertebrates to have these features.
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+
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+ Some amphibians, such as the common coquí, lay eggs out of water (in this case, on palm leaves). The eggs develop directly into adult frogs, by-passing the tadpole stage. Others, like mudpuppies and olms, have a different development. In a process called neoteny, they become sexually developed as tadpoles, and continue to live in the water with gills.
24
+
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+ The order Anura includes the frogs and toads. There is no fundamental difference between frogs and toads. Frogs have a short body, webbed digits (fingers or toes), protruding eyes, forked tongue and no tail. They are exceptional jumpers: many of their features, particularly their long, powerful legs, are adaptations to improve jumping performance. They often live in semi-aquatic or inhabit humid areas.[9]
26
+
27
+ A popular distinction is often made between frogs and toads on the basis of their appearance. Toads' warty skin is an adaptation for making their toxic slime. Apart from these glands, their skin is dry, and that is an adaptation to drier habitats. These features have evolved a number of times independently: convergent evolution. The distinction has no taxonomic basis. The only family exclusively given the common name "toad" is Bufonidae (the "true toads"), but many species from other families are commonly called "toads".[9]
28
+
29
+ The order Gymnophiona contains caecilians. They look like worms or snakes, but they are amphibians. Scientists say it is difficult to study them because most of them live underground. Their skins make a mucus that makes them slippery enough to slip through the dirt. They can make a toxic material in their skins, like many frogs and toads do.[10][11]
30
+
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+ The order Caudata is the salamanders.
32
+
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+ Newts are salamanders which spend their life in the water even though they are adults. They are classified in the subfamily Pleurodelinae of the family Salamandridae.
34
+
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+ Respiration differs between species of salamanders. Species that lack lungs respire through gills. In most cases, these are external gills, visible as tufts on either side of the head. Some salamanders that are terrestrial have lungs that are used in respiration, although these are simple and sac-like, unlike the more complex organs found in mammals. Many species, such as the Olm, have both lungs and gills as adults.[12]
36
+
37
+ Some terrestrial species lack both lungs and gills and perform gas exchange through their skin. Even some species with lungs also respire through the skin in this manner.
38
+
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+ The skin of salamanders secretes mucus. This helps to keep the animal moist when on dry land, keeps their salt balance while in water, and lubricates during swimming. Salamanders also secrete poison from glands in their skin, and some additionally have skin glands for secreting courtship pheromones.[12]
40
+
41
+ Axolotls, from the genus Ambystoma (or mole salamanders), are neotenic amphibians. This means they get to sexual maturity and reproduce while still in a larval form.
42
+
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+ Most salamanders and newts have some defence against predators, usually a poison which makes them uneatable. Their bright colours are warning colouration. If, instead, they are camouflaged, this means they are probably not protected by a toxin.
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+
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+ The second line of defence is to shed their tail, which can grow again. The tail wriggles a bit, attracts the predator while the business part of the salamander moves off.
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+
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+ There are over 350 lungless salamanders. Most of them are terrestrial and are active in daytime. Lungless salamanders may communicate with their nose.[13]p168 Slender salamanders are found in the Pacific Coast. They are sometimes called "worm salamanders". This is because they have slimmer (skinny) bodies than most salamanders.[13]p182 If touched, slender salamanders will bounce on the ground and then run away.
48
+
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+ The order Gymnophiona includes the caecilians. These are long, cylindrical, limbless animals that look like snakes or worms. Their skin has circular folds, increasing their similarity to the segments of earthworms. Some are aquatic but most live underground in burrows they hollow out. Many caecilians give birth to live young, and in the animals that do not do this, the eggs may undergo metamorphosis before they hatch. Caecilians are found in tropical Africa, Asia and Central and South America. There are 171 different species.
50
+
51
+ They are burrowing amphibians. This means that they dig themselves in wet soil like worms. Their heads are strong and have bones that help them dig.[14]p7 Because caecilians have a lot of vertebrae, they can bend easily.
52
+
53
+ Amphibians are the only vertebrates to go through metamorphosis. This means that their young look different from their adult.[15]p8 Amphibians usually reproduce in early spring to late summer, though some reproduce in winter and fall.[13]p156 Most frogs and toads, such as the common frog (Rana temporalis), gather in large groups to ponds, rivers, swamps and lakes to breed.[15]p10 Male frogs and toads may croak to attract a female. When a female frog has chosen a mate, the male frog hops on top of her. They swim together as she lay eggs in the water.[14]p7 Sometimes, males fight to mate with a female.[14]p7 Frogs can lay up to 100 to 60,000 eggs in one clutch. This is called "frogspawn".
54
+
55
+ It is a fundamental feature of amphibia that their reproduction is, one way or another, tied to water. This is because their eggs, although covered by jelly, cannot survive long in dry conditions.
56
+
57
+ Most female amphibians lays her eggs in water. Males release sperm to fertilize them. The eggs are laid one by one or in batches. Batches of eggs can look like a long chain or a ball of foam. They may wrap their eggs around plants in the water. They do this so their eggs will not drift away.[15]p8
58
+
59
+ Tree frogs usually lay their eggs on a leaf in a rainwater pool. Bullfrogs, such as the male American bullfrog and the male African bullfrog, stay with their tadpoles and protect them from predators. They also move their tadpoles by using their nose to dig a channel to another place where there is more water.[15]p9 They do this so their tadpoles do not dry up. Most amphibians leave their eggs to look after themselves. Fish and other animals eat most of their eggs. Male midwife toads carry their eggs on their backs. When they are ready to hatch, the toad goes back to the water and release them.[14]p10
60
+
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+ Tadpoles do not have lungs when they hatch and instead have gills. Because gills have a large surface area, tadpoles can get more oxygen by using them. Young tadpoles have their gills exposed. When they get older, their gills are covered over by skin.[15]p6 When they hatch, tadpoles eat constantly. The tadpoles eat what is left of their eggs, this is usually their first food.[15]p8
62
+
63
+ Frog, toad and newt tadpoles eat plants such as algae and pondweed or filter feed. When they get older, they may start to feed on tiny animals in the water. Salamander tadpoles and surinam horned toad tadpoles are carnivorous throughout their tadpole stage.[15]p9 Surinam horned toad tadpoles are very aggressive. They eat other tadpoles if food is nowhere to be found. The eggs of the spadefoot toad hatches in three days. Their tadpoles complete their metamorphosis in six to eight days. This is because spadefoot toads lay their eggs in places where water will dry up soon.[15]p13
64
+
65
+ Tadpoles of frogs and toads start to grow their back legs first. They then grow front legs a few weeks later. When tadpoles grow their limbs they are called "froglets". This is because they look rather like a smaller version of adult frogs and toads. Tadpoles will also start to grow a backbone after growing their front limbs. After this, their mouths get bigger and their eyes will stick out more. After a tadpole has grown its hands, their tails continue to get shorter until there is nothing left of them.[15]p11
66
+
67
+ Salamanders and newts can be found living in streams. Salamanders can be found in rotten logs, holes or underground places that are wet such as under leaves.[13]p152 Web-toed salamanders live in habitats where there are a lot of rocks. They like to hide under rocks and stones.[13]p195 The tailed frogs, like to live in cold water habitats.[13]p199 In their habitat, amphibians like to live where there are a lot of places to hide. These include nearby small trees, logs and plants. While underwater they like to hide near aquatic plants and rocks. Tree and dart frogs like to live in forests on trees, plants and on the ground under leaves.
68
+
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+ Some amphibia can be found living in the desert or the arctic.[15]p12 The desert froglet lives in the desert. They are only active at night, when temperatures are much cooler. It rarely rains in the desert and because of this, desert frogs will burrow to keep cool. They use their mucus to keep them wet. They will spread it all over their bodies. The mucus will harden to keep the water it produces from escaping. Once the desert frog has done this, it will stay in its cocoon and will not move. They will stay like this for several months to years until a rainstorm. Desert frogs and toads lose water more quickly. The spadefoot toad will spit on the ground. Once they have done this, they will lay on it. Their bodies will take in the water. Their bodies are thin and have a lot of blood vessels, this helps them to be able to take water through their skin. The California newt can survive a fire by spreading its mucous over its body.[15]p12
70
+
71
+ Arctic frogs such as the wood frog, moor frog and the common frog has to live with freezing temperatures for a long time. They will burrow in places where they can get into a cocoon. Like every living organisms, amphibians must have water to survive. Amphibians however, need freshwater. Some frogs such as burrowing frogs can keep water in their bladders. This allows them to stay underground without drying up. The crab-eating frog lives near water that is somewhat salty. They will eat saltwater crabs. Torrent salamanders lives in cold waters. Because of this they have shorter lungs. Short lungs helps them to float easily.
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+ Amphibia are world-wide, though restricted in distribution by their need for moist or watery habitats to reproduce.
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+ Many amphibia have secretions in their skin which makes them toxic. They do not produce toxins themselves.[16] They get toxins from what they eat. They eat insects in their habitat. These insects get the poison from a plant. The toxin has been discovered in beetles.[16] This means that they are likely the cause of poisons found in amphibians. Amphibians do not produce batrachotoxin in captivity, which means that it is not harmful to touch them. The American Indian tribe comechingóns used the toxins of the arrow dart frogs when hunting.[16]
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+
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+ Newts in the genus Taricha has a poison called tetrodotoxin, a neurotoxin. Scientists believe that toxins in newts are caused by bacteria in the genera Pseudoalteromonas, Pseudomonas and Vibrio. Because of this, the newts do not have a lot of predators. However, some species of snakes have develop a resistance. This means that they can eat newts without the toxin hurting them. It is a case of co-evolution.
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+ Amphibians' eyes have lids, glands and ducts. They have good colour vision[17] Caecilian eyes are small and dark. Most of them are blind. Most amphibians have a good sense of smell, even underwater.
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+
81
+ The skeletal system of amphibians are similar to other four-legged animals. They have a spine, rib cage, long bones such as the humerus and femur. They also have short bones such as the phalanges, metacarpals, and metatarsals. Most amphibians have four limbs, except for caecilians. The bones in amphibians are hollow and do not weigh much.[18]
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+ Amphibians are predatory animals. They mostly eat live invertebrates and animals that do not move too quickly. These include caterpillars, earthworms, crayfish, water beetles, snails and dragon fly larvae.[19]p667 Many amphibians use their sticky tongues to catch their prey. They will swallow the animal whole, but may chew it just a bit for it to go down their throats. The Ranidae family and the Ceratophrys genus will eat almost anything they can fit into their mouths.[19]p668 These include rodents, birds, ducklings, small fish and small mammals.[20] Most frogs are cannibalistic, and will eat each other if food is no where to be found. Some amphibians will even eat their own tadpoles and eggs if there is no food for them.[21]
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+ In captivity, pet frogs will be given crickets, worms, small fish, rodents and fruit flies.[22] Adult amphibians can help decrease the mosquito population by eating most of their larvae.[23]
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+ Caecilians eat earthworms, termites and beetle larvae, and also small lizards.[24]p31 Caecilians rely on their smell to find food. They like to eat earthworms and will find them by picking up their chemical signals. Salamanders and newts are fed a lot of different types of worms. These include blood worms and earthworms. They can eat small fish such as goldfish, fathead minnows and guppies. Salamanders also eat crickets and pinkies, which are baby rats.[19]p771
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+ The amphibian population have been decreasing from all locations in the world.[4] Scientists have said that the declining of amphibians is one of the most critical threats to global biodiversity.[4] A number of causes are believed to be involved. These include habitat destruction, over-exploitation, pollution, introduced species, climate change, destruction of the ozone layer, and diseases like chytridiomycosis. Ultraviolet radiation damages the skin, eyes and eggs of amphibians. However, the declines of amphibian population are still not understood.[25]
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+ The Amphibian Conservation Action Plan (ACAP) have released a global strategy to help the amphibian population. It was developed by over 80 leading experts.[26] The Amphibian Specialist Group of the World Conservation Union (IUCN) are working on another global strategy to help amphibian populations.[26] The Amphibian Ark (AA) is an organization that was created to help the public be aware of the decline in amphibian populations. They have been working with zoos and aquaria around the world. They try to encourage them to create a natural habitat for threatened amphibians.[26] Another project is the Panama Amphibian Rescue and Conservation Project (PARCP) which are trying to spread awareness about chyridiomycosis. The disease is spreading into eastern Panama and threatening all amphibians living there.[27]
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+ On January 21, 2008, Evolutionarily Distinct and Globally Endangered (EDGE) released a statement to the public.[28] It was created by Helen Meredith, who identified nature's most endangered species. Meredith explains that 85% of the top 100 endangered amphibians list are receiving little to no conservation attention.
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+ Bullfrog legs are a source of food for Southern United States and the Midwestern United States.[29] People hunt bullfrogs at night near rivers. The bullfrogs' legs are cooked, while their backs are fried.[30]p9 In China, bullfrogs are sold alive for eating. However, they are later cooked dead with vegetables. In the state of California, people must have a license to catch bullfrogs for food.[31]p256 In schools, bullfrogs are dissected in biology classes. Usually, this is done in grammar school.[32]p85 The dissecting is a method for teaching students the anatomy of a bullfrog.[32]p85 The emperor newt is hunted in China for food. They are also used there for medicine. Burrowing frogs are able to hold water in their bladder, because of this indigenous Australians use them to drink water.[15]p13
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+ Amphibians are also kept as pets.[33]p4 They are kept in aquariums or a terrarium. A terrarium is a tank that is decorated with plants and soil on one side. On the other side, there is water. Most amphibians would need one place for land and another for water.[33]p8 Each type of amphibian should have its special needs taken care of. Semi-aquatic amphibians need both land and water divided in the tank. Tropical frogs would need mist and high humidity in their terrariums.[34]p7 Water for amphibia needs dechlorination. The chlorine in tap water can kill amphibia. Some amphibians popular exotic pets, and are found in pet stores that sell reptiles.[33]p22
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1
+ Regions where it is an official language
2
+      Regions where it is a second language
3
+
4
+ French (French: français, pronounced "Fronce-eh") is a Romance language that was first spoken in France. It is also spoken in Belgium (Wallonia), Luxembourg, Quebec (Canada), Switzerland (Romandy) and many different countries in Africa (Francophone Africa). About 220 million people speak French as a native or a second language.[4] It has also been one of the roots of other languages such as the Haitian Creole language. Like the other Romance languages, its nouns have genders that are divided into masculine (masculin) and feminine (féminin) words.
5
+
6
+ In ancient times, the Celts lived in what is now France.[5] In those days, the land was called Gaul (Latin: Gallia). The Romans conquered Gallia and made it a province. Because the Romans spoke Latin, the local people learned Latin and began to speak it. Their own language, Gaulish, tended to be spoken less often, although Breton is a language still spoken today in the part of France called Brittany, that came from the old Celtic language.
7
+
8
+ French pronunciation, more so than other Romance languages, became radically different from Latin. After the Roman Empire fell and Germanic peoples swarmed the countryside, Vulgar Latin was changing quickly. In medieval France it changed into two dialects or languages: langue d'oc and langue d'oïl. They both mean "language of yes", because oc was the word for "yes" in the south, and oïl meant "yes" in the north. Today, the word for yes in French is oui, pronounced like "we".
9
+
10
+ In 1635, France established the French Academy in order to standardize the French language. To this day, the academy establishes the rules for Standard French.
11
+
12
+ Langue d'oc is now called Occitan, and it is still spoken by many people in Southern France.
13
+
14
+ French uses the roman alphabet, like English. There are a few differences, because vowels can have three types of diacritics added on to them. These are the acute accent é; grave accent è and circumflex accent î. A cedilla can also be added onto a c to make ç.
15
+
16
+ If a word ends with a consonant, this will usually not be pronounced unless the next word starts with a vowel. However, if the word is very short or the last consonant is a c, r, l or f, this is still pronounced.
17
+
18
+ Here are some examples of French words and sentences :
19
+
20
+ Many French words are like English words, because English took many words from the Norman language, a dialect of French influenced by Old Norse. This is despite the fact that scholars consider English to be a Germanic language like German. Words in different languages with the same meaning which are spelled similarly are called cognates. Most English words ending with "tion" and "sion" came from the French language. See below for more examples:
21
+
22
+ Aragonese  ·
23
+ Aromanian  ·
24
+ Arpitan  ·
25
+ Asturian or Bable  ·
26
+ Burgundian  ·
27
+ Catalan (Valencian, Balear)  ·
28
+ Champenois  ·
29
+ Corsican (Gallurese, Sassarese)  ·
30
+ Dalmatian  ·
31
+ Dgèrnésiais  ·
32
+ Emiliano-Romagnolo  ·
33
+ Fala  ·
34
+ Franc-Comtois  ·
35
+ French (with Cajun French, Quebec French)
36
+  · Friulian  ·
37
+ Galician  ·
38
+ Gallo  ·
39
+ Genoese  ·
40
+ Istriot  ·
41
+ Istro-Romanian  ·
42
+ Italian (Judeo-Italian)  ·
43
+ Jèrriais  ·
44
+ Ladin  ·
45
+ Ladino  ·
46
+ Leonese  ·
47
+ Ligurian (Monégasque)  ·
48
+ Lombard  ·
49
+ Lorrain  ·
50
+ Megleno-Romanian  ·
51
+ Mirandese  ·
52
+ Mozarabic  ·
53
+ Neapolitan  ·
54
+ Norman  ·
55
+ Occitan  ·
56
+ Picard  ·
57
+ Piedmontese  ·
58
+ Poitevin-Saintongeais  ·
59
+ Portuguese (with Brazilian Portuguese)  ·
60
+ Romanian (Moldovan, Vlach)  ·
61
+ Romansh  ·
62
+ Sardinian  ·
63
+ Sicilian  ·
64
+ Spanish (with Rioplatense Spanish)  ·
65
+ Shuadit  ·
66
+ Venetian  ·
67
+ Walloon  ·
ensimple/2061.html.txt ADDED
@@ -0,0 +1,67 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ Regions where it is an official language
2
+      Regions where it is a second language
3
+
4
+ French (French: français, pronounced "Fronce-eh") is a Romance language that was first spoken in France. It is also spoken in Belgium (Wallonia), Luxembourg, Quebec (Canada), Switzerland (Romandy) and many different countries in Africa (Francophone Africa). About 220 million people speak French as a native or a second language.[4] It has also been one of the roots of other languages such as the Haitian Creole language. Like the other Romance languages, its nouns have genders that are divided into masculine (masculin) and feminine (féminin) words.
5
+
6
+ In ancient times, the Celts lived in what is now France.[5] In those days, the land was called Gaul (Latin: Gallia). The Romans conquered Gallia and made it a province. Because the Romans spoke Latin, the local people learned Latin and began to speak it. Their own language, Gaulish, tended to be spoken less often, although Breton is a language still spoken today in the part of France called Brittany, that came from the old Celtic language.
7
+
8
+ French pronunciation, more so than other Romance languages, became radically different from Latin. After the Roman Empire fell and Germanic peoples swarmed the countryside, Vulgar Latin was changing quickly. In medieval France it changed into two dialects or languages: langue d'oc and langue d'oïl. They both mean "language of yes", because oc was the word for "yes" in the south, and oïl meant "yes" in the north. Today, the word for yes in French is oui, pronounced like "we".
9
+
10
+ In 1635, France established the French Academy in order to standardize the French language. To this day, the academy establishes the rules for Standard French.
11
+
12
+ Langue d'oc is now called Occitan, and it is still spoken by many people in Southern France.
13
+
14
+ French uses the roman alphabet, like English. There are a few differences, because vowels can have three types of diacritics added on to them. These are the acute accent é; grave accent è and circumflex accent î. A cedilla can also be added onto a c to make ç.
15
+
16
+ If a word ends with a consonant, this will usually not be pronounced unless the next word starts with a vowel. However, if the word is very short or the last consonant is a c, r, l or f, this is still pronounced.
17
+
18
+ Here are some examples of French words and sentences :
19
+
20
+ Many French words are like English words, because English took many words from the Norman language, a dialect of French influenced by Old Norse. This is despite the fact that scholars consider English to be a Germanic language like German. Words in different languages with the same meaning which are spelled similarly are called cognates. Most English words ending with "tion" and "sion" came from the French language. See below for more examples:
21
+
22
+ Aragonese  ·
23
+ Aromanian  ·
24
+ Arpitan  ·
25
+ Asturian or Bable  ·
26
+ Burgundian  ·
27
+ Catalan (Valencian, Balear)  ·
28
+ Champenois  ·
29
+ Corsican (Gallurese, Sassarese)  ·
30
+ Dalmatian  ·
31
+ Dgèrnésiais  ·
32
+ Emiliano-Romagnolo  ·
33
+ Fala  ·
34
+ Franc-Comtois  ·
35
+ French (with Cajun French, Quebec French)
36
+  · Friulian  ·
37
+ Galician  ·
38
+ Gallo  ·
39
+ Genoese  ·
40
+ Istriot  ·
41
+ Istro-Romanian  ·
42
+ Italian (Judeo-Italian)  ·
43
+ Jèrriais  ·
44
+ Ladin  ·
45
+ Ladino  ·
46
+ Leonese  ·
47
+ Ligurian (Monégasque)  ·
48
+ Lombard  ·
49
+ Lorrain  ·
50
+ Megleno-Romanian  ·
51
+ Mirandese  ·
52
+ Mozarabic  ·
53
+ Neapolitan  ·
54
+ Norman  ·
55
+ Occitan  ·
56
+ Picard  ·
57
+ Piedmontese  ·
58
+ Poitevin-Saintongeais  ·
59
+ Portuguese (with Brazilian Portuguese)  ·
60
+ Romanian (Moldovan, Vlach)  ·
61
+ Romansh  ·
62
+ Sardinian  ·
63
+ Sicilian  ·
64
+ Spanish (with Rioplatense Spanish)  ·
65
+ Shuadit  ·
66
+ Venetian  ·
67
+ Walloon  ·
ensimple/2062.html.txt ADDED
@@ -0,0 +1,111 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ – on the European continent  (green & dark grey)– in the European Union  (green)
2
+
3
+
4
+
5
+ France (/ˈfræns/ (help·info) or /ˈfrɑːns/; French pronunciation: ​[fʁɑ̃s]), officially the French Republic (French: République française, French pronunciation: ​[ʁepyblik fʁɑ̃sɛz]), is a country whose metropolitan territory is located in Western Europe and that also comprises various overseas islands and territories located in other continents.[10] Metropolitan France extends from the Mediterranean Sea to the English Channel and the North Sea, and from the Rhine to the Atlantic Ocean. It is often referred to as L’Hexagone ("The Hexagon") because of the shape of its territory. France is a unitary semi-presidential republic with its main ideals expressed in the Declaration of the Rights of Man and of the Citizen.
6
+
7
+ Metropolitan France is bordered (clockwise from the north) by Belgium, Luxembourg, Germany, Switzerland, Italy, Monaco, Andorra, and Spain. France's overseas departments and collectivities also share land borders with Brazil and Suriname (bordering French Guiana), and the Netherlands Antilles (bordering Saint-Martin). France is linked to the United Kingdom by the Channel Tunnel, which passes underneath the English Channel.
8
+
9
+ France is the largest country in the European Union and the second largest in Europe. It has been one of the world's foremost powers for many centuries. During the 17th and 18th centuries, France colonized much of North America; during the 19th and early 20th centuries, France built one of the largest colonial empires of the time, including large portions of North, West and Central Africa, Southeast Asia, and many Pacific islands. France is a developed country and possesses the fifth largest economy[11] in the world, according to nominal GDP figures. It is the most visited country in the world, receiving 82 million foreign tourists annually.[12] France is one of the founding members of the European Union, and has the largest land area of all members. It is also a founding member of the United Nations, and a member of the Francophonie, the G8, NATO, and the Latin Union. It is one of the five permanent members of the United Nations Security Council and owns the largest number of nuclear weapons with active warheads and nuclear power plants in the European Union.
10
+
11
+ France's official language is French, also being official in 29 other countries. Some francophone countries include Haidi, Belgium, and Nigeria.
12
+
13
+ France is located in Western Europe.[13] France shares its borders with Belgium, Luxembourg, Germany, Switzerland, Italy, Monaco, Andorra, and Spain.[14] France has two mountain ranges near its borders: the Alps in the east and the Pyrenees in the south.[14] There are many rivers in France, including the Seine and the Loire.[15] In the north and the west of France, there are low hills and river valleys.
14
+
15
+ In France there are many different climates.[16] The Atlantic has a major effect on the weather in the north and west. This means the temperature is about the same most of the year. It is in the marine west coast climate region. In the east, winters are cold and the weather is good. Summers are hot and stormy. In the south, winters are cool and wet. Summers are hot and dry.[17] The north has a temperate climate similar to that of the United Kingdom and other Northern European countries.
16
+
17
+ France has the second-largest Exclusive Economic Zone (EEZ) in the world.[18] It covers 11,035,000 km2 (4,260,637 sq mi). Only the United States has a larger one .
18
+
19
+ The name "France" comes from the Latin word Francia ', which means "land of the Franks" or "Frankland".[19]
20
+
21
+ The borders of modern France are about the same as those of ancient Gaul. Celtic Gauls inhabited Ancient Gaul. Julius Caesar conquered Gaul for Rome in the 1st century BC.[20] Eventually, the Gauls adopted Roman speech (Latin, from which the French language evolved) and Roman culture. Christianity first appeared in the 2nd and 3rd centuries AD. It became firmly established by the fourth and fifth centuries.
22
+
23
+ In the 4th century AD, the Germanic tribes, principally the Franks invaded the Gauls. This is how the name Francie appeared. The modern name "France" comes from the name of the Capetian Kings of France around Paris. The Franks were the first tribe of Europe after the fall of the Roman Empire to convert to Christianity rather than Arianism. The French called themselves "the most Christian Kingdom of France".[21]
24
+
25
+ The Treaty of Verdun (843), divided Charlemagne's Empire into three parts.[22] The biggest area was Western Francia. It is similar to modern France.
26
+
27
+ The Carolingian dynasty ruled France until 987, when Hugh Capet became King of France. His descendants, the Direct Capetians, the House of Valois and the House of Bourbon, unified the country with many wars and dynastic inheritance. The monarchy was the most powerful during the 17th century and the reign of Louis XIV of France.[23] At that time, France had the largest population in Europe. The country had a big influence over European politics, economy, and culture. French became the common language of diplomacy in international affairs. Much of the Enlightenment happened in France. French scientists made big scientific discoveries in the 18th century. France also conquered many overseas possessions in the Americas and Asia.[24]
28
+
29
+ France had a monarchy until the French Revolution in 1789. The Great King Louis XVI and his wife, Marie Antoinette, were executed in 1793.[25] Thousands of other French citizens were killed. Napoleon Bonaparte took control of the Republic in 1799. He later made himself Emperor of the First Empire (1804–1814). His armies conquered most of continental Europe.[26] The metric system was invented by French scientists during the French revolution.That time 3 estates were developed.
30
+
31
+ After Napoleon's final defeat in 1815 at the Battle of Waterloo, another monarchy arose. Later Louis-Napoléon Bonaparte created the Second Empire in 1852. Louis-Napoléon was removed after the defeat in the Franco-Prussian war of 1870. The Third Republic replaced his regime.[27]
32
+
33
+ The large French colonial empire in the 19th century included parts of West Africa and Southeast Asia. The culture and politics of these regions were influenced by France. Many ex-colonies officially speak the French language.[28]
34
+
35
+ The country actively took part in both the First and Second World Wars, with battles taking place on its soil. During the First World War, millions were killed in the trenches including over a million in the Battle of the Somme.[29] The conditions were extremely difficult for the soldiers on the front. The last surviving veteran was Pierre Picault who died on 20 November 2008 at the age of 109.[30]
36
+ During the Second World War, Nazis occupied France. The Allies landed in Normandy on 6 June 1944 and began the Battle of Normandy. German forces lost France in just a few months.
37
+
38
+ The 13 regions and 96 departments of metropolitan France includes Corsica (Corse, lower right). The Paris area is expanded. France is divided into (administrative) regions. 22 of them are in Metropolitan France:
39
+
40
+ Corsica has a different status than the other 12 metropolitan regions. It is called collectivité territoriale.
41
+
42
+ France also has five overseas regions:
43
+
44
+ These four overseas regions have the same status as the metropolitan ones. They are like the overseas American states of Alaska and Hawaii.
45
+
46
+ Then France is divided into 101 departments. The departments are divided into 342 arrondissements. The arrondissements are re-divided into 4,032 cantons. The smallest subdivision is the commune (there are 36,699 communes). On January 1, 2008, INSEE counted 36,781 communes in France. 36,569 of them are in metropolitan France and 212 of them are in overseas France.[31][32]
47
+
48
+ The government of France is a semi-presidential system determined by the French Constitution of the French Fifth Republic.[33] The constitution declares the nation to be "an indivisible, secular, democratic, and social Republic". It provides for a separation of powers.[34]
49
+
50
+ The French armed forces are divided into four branches:
51
+
52
+ France has about 359,000 military personnel.[35][36] France spends 2.6% of its gross domestic product (GDP) on defense. This is the highest in the European Union. France and the UK spend 40% of the EU defence budget. About 10% of France's defence budget is for its nuclear weapons force.
53
+
54
+ France is a member of the United Nations.[37] It is a permanent member of the United Nations Security Council and has veto rights.[38] It is also a member of the World Trade Organisation (WTO). It hosts the headquarters of the OECD, UNESCO and Interpol. In 1953, the United Nations asked France to choose a coat of arms to represent them internationally. The French emblem is now on their passports.
55
+
56
+ France was a founding member of the European Union.[39] In the 1960s, France wanted to exclude the United Kingdom from the organisation. It wanted to build its own economic power in continental Europe. France and Germany became closer after World War II. This was to try to become the most influential country in the EU. It limited the influence of the new Eastern European members. France is a member of the North Atlantic Treaty Organisation (NATO).[40] However, under President de Gaulle, it left the joint military command. In the early 1990s, France received criticism for its underground nuclear tests in French Polynesia. France vigorously opposed the 2003 invasion of Iraq.[41] France retains strong political and economic influence in its former African colonies. For instance it has supplied economic aid and troops for peace-keeping missions in the Ivory Coast and Chad.
57
+
58
+ France is a member of the G8 group of leading industrialised countries. France has the eighth-largest economy in the world by Gross domestic product (GDP) (which takes into account how much it costs to live in different countries and inflation rates).[42] France and 11 other European Union members jointly launched the euro on 1 January 1999 and started using it in 2002.[43]
59
+
60
+ France's economy has nearly 2.9 million registered companies.[44] The government has a considerable influence over railway, electricity, aircraft, and telecommunications firms (as it owns big companies like SNCF and EDF (French electricity)).[45] France has an important aerospace (design of aircraft and spacecraft) industry led by Airbus.[46] It can also launch rockets from French Guiana.[47]
61
+
62
+ France has invested a lot in nuclear power. This made France the smallest producer of carbon dioxide among the seven most industrialised countries in the world.[48] As a result, 59 nuclear power plants generate most of the electricity produced in the country (78% in 2006,[49] up from only 8% in 1973, 24% in 1980, and 75% in 1990).
63
+
64
+ France is the leading agricultural producer and exporter in Europe.[50] France exports wheat, poultry, dairy products, beef, and pork. It is also famous for its wine industry. France received 10 billion euros in 2006 from the European Community as subsidies to its farmers.[51]
65
+
66
+ At one time, the Factory Act of 1833 limited the workday for women and children to 11 hours a day.[52]
67
+
68
+ On 1 January 2008, it was estimated that 63.8 million people live in France, including in the Overseas Regions of France.[53] 61,875,000 of these live in metropolitan France, the part of the country that is within Europe.[53]
69
+
70
+ The major ethnic groups living in France today are descended from Celtic people and Roman people.[54] The significant minority groups living in France are:
71
+
72
+ French is the official language of France. It belongs to the Romance language group, which includes Italian and Spanish. Many regional dialects are also used in France. Alsatian, a German dialect, is spoken in Alsace and in parts of Lorraine in eastern France. French was the language of diplomacy and culture in Europe between the 17th and 19th century and is still widely used.[55]
73
+
74
+ Some people in France also speak Basque, Breton, Catalan, Corsican, German, Flemish, and Occitan.
75
+
76
+ France is a secular country and the constitution guarantees freedom of religion.[56] The population is about 51% Roman Catholic, and 31% of people are agnostics or atheists. 5% are Muslim, 3% say they are Protestant and 1% say they are Jewish. 10% are from other religions or do not have an opinion about religion.[57][58] There are also Zoroastrian, Unitarian Universalist, Jain and Wiccan communities. Religions founded in France include Raelism.
77
+
78
+ According to a Poll in 2007:[59]
79
+
80
+ French literature began in the Middle Ages.[60] French was divided into several dialects at the time. Some authors spelled words differently from one other.
81
+
82
+ During the 17th century, Pierre Corneille, Jean Racine, Molière, Blaise Pascal and René Descartes were the main authors.[61]
83
+
84
+ In the 18th and 19th centuries, French literature and poetry reached its best. The 18th century saw writings of authors, essayists and moralists as Voltaire and Jean-Jacques Rousseau.
85
+ As for French children's literature in those times, Charles Perrault wrote stories such as "Little Red Riding Hood", "Beauty and the Beast", "Sleeping Beauty" and "Puss in Boots".[62]
86
+
87
+ Many famous French novels were written in the 19th century by authors such as Victor Hugo, Alexandre Dumas and Jules Verne. They wrote popular novels like The Three Musketeers, The Count of Monte-Cristo, Twenty Thousand Leagues Under the Sea, The Hunchback of Notre-Dame and Les Misérables. Other 19th century fiction writers include Emile Zola, Guy de Maupassant, Théophile Gautier and Stendhal.[63]
88
+
89
+ Famous novels were written during the 20th century by Marcel Proust, Antoine de Saint-Exupéry, Albert Camus, Jean-Paul Sartre and Michel Houellebecq.
90
+
91
+ The Tour de France cycling race in July is one of the best-known sporting events.[64] It is a three-week race of around 3,500 km that covers most of France and ends in the centre of Paris, on the Avenue des Champs-Elysées. Football is another popular sport in France. The French team won the FIFA World Cup in 1998 and 2018. They also won the UEFA European Football Championship in 1984 and 2000. France also hosts the 24 Hours of Le Mans car race. France also hosted the Rugby World Cup in 2007 and finished fourth.[65]
92
+ France is closely associated with the Modern Olympic Games. At the end of the 19th century, the Baron Pierre de Coubertin suggested having the Olympic Games again. France hosted the Summer Olympics twice, in 1900 and 1924, in Paris. France will host the Summer Olympics in 2024, in Paris. France also hosted the Winter Games three times: in 1924 in Chamonix, in 1968 in Grenoble, and in 1992 in Albertville.
93
+
94
+ French cuisine has influenced the style of cooking throughout Europe, and its chefs work in restaurants throughout the world.[66]
95
+
96
+ The roots of modern haute cuisine lie in chefs like La Varenne (1615–1678) and the notable chef of Napoleon, Marie-Antoine Carême (1784–1833). These chefs developed a lighter style of food compared to the food of the Middle Ages. They used fewer spices, and more herbs and creamy ingredients.
97
+
98
+ Typical ingredients like roux and fish stock, and techniques such as marinading, and dishes such as ragout, were invented. Carême was an expert pâtissier (pastry-maker), and this is still a mark of French cooking. He developed basic sauces, his 'mother sauces'; he had over a hundred sauces in his repertoire, based on the half-dozen mother sauces.
99
+
100
+ French cuisine was introduced in the 20th century by Georges Auguste Escoffier (1846–1935). He was a genius at organisation. He worked out how to run large restaurants, as in a big hotel or a palace; how the staff should be organised; how the menu was prepared. He had methods for everything. Escoffier's largest contribution was the publication of Le Guide Culinaire in 1903, which established the fundamentals of French cookery. Escoffier managed the restaurants and cuisine at the Savoy Hotel and Carlton Hotel in London, the Hôtel Ritz Paris, and some of the greatest cruise ships.
101
+
102
+ Escoffier, however, left out much of the culinary character to be found in the regions of France.
103
+
104
+ Gastro-tourism and the Guide Michelin helped to acquaint people with the rich bourgeois and peasant cuisine of the French countryside in the 20th century. Gascon cuisine has also had great influence over the cuisine in the southwest of France. Many dishes that were once regional have proliferated in variations across the country. Cheese and wine are a major part of the cuisine, playing different roles regionally and nationally.[67][68][69] In the north of France, people often prefer to use butter to cook. In the south, they prefer olive oil and garlic.[70] In France, each region has its own special dish; choucroute in Alsace, quiche in Lorraine, cassoulet in the Languedoc-Roussillon, and tapenade in Provence-Alpes-Côte d'Azur.
105
+
106
+ In November 2010, French gastronomy was added by UNESCO to its lists of the world's 'intangible cultural heritage'.[71][72]
107
+
108
+ France is the number one tourist destination in the world. In 2007, 81.9 million foreign tourists visited France.[73] Spain comes second (58.5 million in 2006) and the United States come third (51.1 million in 2006).
109
+ Some of the most famous attractions in Paris, are the Eiffel Tower and the Arc de Triomphe. Another one is Mont Saint Michel, in Normandy.[74]
110
+
111
+ A European Disneyland is located in a suburb east of Paris. The resort opened in 1992 and is also a popular tourist destination in Europe.
ensimple/2063.html.txt ADDED
@@ -0,0 +1,111 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ – on the European continent  (green & dark grey)– in the European Union  (green)
2
+
3
+
4
+
5
+ France (/ˈfræns/ (help·info) or /ˈfrɑːns/; French pronunciation: ​[fʁɑ̃s]), officially the French Republic (French: République française, French pronunciation: ​[ʁepyblik fʁɑ̃sɛz]), is a country whose metropolitan territory is located in Western Europe and that also comprises various overseas islands and territories located in other continents.[10] Metropolitan France extends from the Mediterranean Sea to the English Channel and the North Sea, and from the Rhine to the Atlantic Ocean. It is often referred to as L’Hexagone ("The Hexagon") because of the shape of its territory. France is a unitary semi-presidential republic with its main ideals expressed in the Declaration of the Rights of Man and of the Citizen.
6
+
7
+ Metropolitan France is bordered (clockwise from the north) by Belgium, Luxembourg, Germany, Switzerland, Italy, Monaco, Andorra, and Spain. France's overseas departments and collectivities also share land borders with Brazil and Suriname (bordering French Guiana), and the Netherlands Antilles (bordering Saint-Martin). France is linked to the United Kingdom by the Channel Tunnel, which passes underneath the English Channel.
8
+
9
+ France is the largest country in the European Union and the second largest in Europe. It has been one of the world's foremost powers for many centuries. During the 17th and 18th centuries, France colonized much of North America; during the 19th and early 20th centuries, France built one of the largest colonial empires of the time, including large portions of North, West and Central Africa, Southeast Asia, and many Pacific islands. France is a developed country and possesses the fifth largest economy[11] in the world, according to nominal GDP figures. It is the most visited country in the world, receiving 82 million foreign tourists annually.[12] France is one of the founding members of the European Union, and has the largest land area of all members. It is also a founding member of the United Nations, and a member of the Francophonie, the G8, NATO, and the Latin Union. It is one of the five permanent members of the United Nations Security Council and owns the largest number of nuclear weapons with active warheads and nuclear power plants in the European Union.
10
+
11
+ France's official language is French, also being official in 29 other countries. Some francophone countries include Haidi, Belgium, and Nigeria.
12
+
13
+ France is located in Western Europe.[13] France shares its borders with Belgium, Luxembourg, Germany, Switzerland, Italy, Monaco, Andorra, and Spain.[14] France has two mountain ranges near its borders: the Alps in the east and the Pyrenees in the south.[14] There are many rivers in France, including the Seine and the Loire.[15] In the north and the west of France, there are low hills and river valleys.
14
+
15
+ In France there are many different climates.[16] The Atlantic has a major effect on the weather in the north and west. This means the temperature is about the same most of the year. It is in the marine west coast climate region. In the east, winters are cold and the weather is good. Summers are hot and stormy. In the south, winters are cool and wet. Summers are hot and dry.[17] The north has a temperate climate similar to that of the United Kingdom and other Northern European countries.
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+ France has the second-largest Exclusive Economic Zone (EEZ) in the world.[18] It covers 11,035,000 km2 (4,260,637 sq mi). Only the United States has a larger one .
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+
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+ The name "France" comes from the Latin word Francia ', which means "land of the Franks" or "Frankland".[19]
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+ The borders of modern France are about the same as those of ancient Gaul. Celtic Gauls inhabited Ancient Gaul. Julius Caesar conquered Gaul for Rome in the 1st century BC.[20] Eventually, the Gauls adopted Roman speech (Latin, from which the French language evolved) and Roman culture. Christianity first appeared in the 2nd and 3rd centuries AD. It became firmly established by the fourth and fifth centuries.
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+
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+ In the 4th century AD, the Germanic tribes, principally the Franks invaded the Gauls. This is how the name Francie appeared. The modern name "France" comes from the name of the Capetian Kings of France around Paris. The Franks were the first tribe of Europe after the fall of the Roman Empire to convert to Christianity rather than Arianism. The French called themselves "the most Christian Kingdom of France".[21]
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+ The Treaty of Verdun (843), divided Charlemagne's Empire into three parts.[22] The biggest area was Western Francia. It is similar to modern France.
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+
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+ The Carolingian dynasty ruled France until 987, when Hugh Capet became King of France. His descendants, the Direct Capetians, the House of Valois and the House of Bourbon, unified the country with many wars and dynastic inheritance. The monarchy was the most powerful during the 17th century and the reign of Louis XIV of France.[23] At that time, France had the largest population in Europe. The country had a big influence over European politics, economy, and culture. French became the common language of diplomacy in international affairs. Much of the Enlightenment happened in France. French scientists made big scientific discoveries in the 18th century. France also conquered many overseas possessions in the Americas and Asia.[24]
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+
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+ France had a monarchy until the French Revolution in 1789. The Great King Louis XVI and his wife, Marie Antoinette, were executed in 1793.[25] Thousands of other French citizens were killed. Napoleon Bonaparte took control of the Republic in 1799. He later made himself Emperor of the First Empire (1804–1814). His armies conquered most of continental Europe.[26] The metric system was invented by French scientists during the French revolution.That time 3 estates were developed.
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+ After Napoleon's final defeat in 1815 at the Battle of Waterloo, another monarchy arose. Later Louis-Napoléon Bonaparte created the Second Empire in 1852. Louis-Napoléon was removed after the defeat in the Franco-Prussian war of 1870. The Third Republic replaced his regime.[27]
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+ The large French colonial empire in the 19th century included parts of West Africa and Southeast Asia. The culture and politics of these regions were influenced by France. Many ex-colonies officially speak the French language.[28]
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+ The country actively took part in both the First and Second World Wars, with battles taking place on its soil. During the First World War, millions were killed in the trenches including over a million in the Battle of the Somme.[29] The conditions were extremely difficult for the soldiers on the front. The last surviving veteran was Pierre Picault who died on 20 November 2008 at the age of 109.[30]
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+ During the Second World War, Nazis occupied France. The Allies landed in Normandy on 6 June 1944 and began the Battle of Normandy. German forces lost France in just a few months.
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+ The 13 regions and 96 departments of metropolitan France includes Corsica (Corse, lower right). The Paris area is expanded. France is divided into (administrative) regions. 22 of them are in Metropolitan France:
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+
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+ Corsica has a different status than the other 12 metropolitan regions. It is called collectivité territoriale.
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+ France also has five overseas regions:
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+
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+ These four overseas regions have the same status as the metropolitan ones. They are like the overseas American states of Alaska and Hawaii.
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+ Then France is divided into 101 departments. The departments are divided into 342 arrondissements. The arrondissements are re-divided into 4,032 cantons. The smallest subdivision is the commune (there are 36,699 communes). On January 1, 2008, INSEE counted 36,781 communes in France. 36,569 of them are in metropolitan France and 212 of them are in overseas France.[31][32]
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+ The government of France is a semi-presidential system determined by the French Constitution of the French Fifth Republic.[33] The constitution declares the nation to be "an indivisible, secular, democratic, and social Republic". It provides for a separation of powers.[34]
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+ The French armed forces are divided into four branches:
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+ France has about 359,000 military personnel.[35][36] France spends 2.6% of its gross domestic product (GDP) on defense. This is the highest in the European Union. France and the UK spend 40% of the EU defence budget. About 10% of France's defence budget is for its nuclear weapons force.
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+
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+ France is a member of the United Nations.[37] It is a permanent member of the United Nations Security Council and has veto rights.[38] It is also a member of the World Trade Organisation (WTO). It hosts the headquarters of the OECD, UNESCO and Interpol. In 1953, the United Nations asked France to choose a coat of arms to represent them internationally. The French emblem is now on their passports.
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+ France was a founding member of the European Union.[39] In the 1960s, France wanted to exclude the United Kingdom from the organisation. It wanted to build its own economic power in continental Europe. France and Germany became closer after World War II. This was to try to become the most influential country in the EU. It limited the influence of the new Eastern European members. France is a member of the North Atlantic Treaty Organisation (NATO).[40] However, under President de Gaulle, it left the joint military command. In the early 1990s, France received criticism for its underground nuclear tests in French Polynesia. France vigorously opposed the 2003 invasion of Iraq.[41] France retains strong political and economic influence in its former African colonies. For instance it has supplied economic aid and troops for peace-keeping missions in the Ivory Coast and Chad.
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+
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+ France is a member of the G8 group of leading industrialised countries. France has the eighth-largest economy in the world by Gross domestic product (GDP) (which takes into account how much it costs to live in different countries and inflation rates).[42] France and 11 other European Union members jointly launched the euro on 1 January 1999 and started using it in 2002.[43]
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+ France's economy has nearly 2.9 million registered companies.[44] The government has a considerable influence over railway, electricity, aircraft, and telecommunications firms (as it owns big companies like SNCF and EDF (French electricity)).[45] France has an important aerospace (design of aircraft and spacecraft) industry led by Airbus.[46] It can also launch rockets from French Guiana.[47]
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+ France has invested a lot in nuclear power. This made France the smallest producer of carbon dioxide among the seven most industrialised countries in the world.[48] As a result, 59 nuclear power plants generate most of the electricity produced in the country (78% in 2006,[49] up from only 8% in 1973, 24% in 1980, and 75% in 1990).
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+ France is the leading agricultural producer and exporter in Europe.[50] France exports wheat, poultry, dairy products, beef, and pork. It is also famous for its wine industry. France received 10 billion euros in 2006 from the European Community as subsidies to its farmers.[51]
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+
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+ At one time, the Factory Act of 1833 limited the workday for women and children to 11 hours a day.[52]
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+
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+ On 1 January 2008, it was estimated that 63.8 million people live in France, including in the Overseas Regions of France.[53] 61,875,000 of these live in metropolitan France, the part of the country that is within Europe.[53]
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+ The major ethnic groups living in France today are descended from Celtic people and Roman people.[54] The significant minority groups living in France are:
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+
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+ French is the official language of France. It belongs to the Romance language group, which includes Italian and Spanish. Many regional dialects are also used in France. Alsatian, a German dialect, is spoken in Alsace and in parts of Lorraine in eastern France. French was the language of diplomacy and culture in Europe between the 17th and 19th century and is still widely used.[55]
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+ Some people in France also speak Basque, Breton, Catalan, Corsican, German, Flemish, and Occitan.
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+ France is a secular country and the constitution guarantees freedom of religion.[56] The population is about 51% Roman Catholic, and 31% of people are agnostics or atheists. 5% are Muslim, 3% say they are Protestant and 1% say they are Jewish. 10% are from other religions or do not have an opinion about religion.[57][58] There are also Zoroastrian, Unitarian Universalist, Jain and Wiccan communities. Religions founded in France include Raelism.
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+ According to a Poll in 2007:[59]
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+ French literature began in the Middle Ages.[60] French was divided into several dialects at the time. Some authors spelled words differently from one other.
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+ During the 17th century, Pierre Corneille, Jean Racine, Molière, Blaise Pascal and René Descartes were the main authors.[61]
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+ In the 18th and 19th centuries, French literature and poetry reached its best. The 18th century saw writings of authors, essayists and moralists as Voltaire and Jean-Jacques Rousseau.
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+ As for French children's literature in those times, Charles Perrault wrote stories such as "Little Red Riding Hood", "Beauty and the Beast", "Sleeping Beauty" and "Puss in Boots".[62]
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+ Many famous French novels were written in the 19th century by authors such as Victor Hugo, Alexandre Dumas and Jules Verne. They wrote popular novels like The Three Musketeers, The Count of Monte-Cristo, Twenty Thousand Leagues Under the Sea, The Hunchback of Notre-Dame and Les Misérables. Other 19th century fiction writers include Emile Zola, Guy de Maupassant, Théophile Gautier and Stendhal.[63]
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+ Famous novels were written during the 20th century by Marcel Proust, Antoine de Saint-Exupéry, Albert Camus, Jean-Paul Sartre and Michel Houellebecq.
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+ The Tour de France cycling race in July is one of the best-known sporting events.[64] It is a three-week race of around 3,500 km that covers most of France and ends in the centre of Paris, on the Avenue des Champs-Elysées. Football is another popular sport in France. The French team won the FIFA World Cup in 1998 and 2018. They also won the UEFA European Football Championship in 1984 and 2000. France also hosts the 24 Hours of Le Mans car race. France also hosted the Rugby World Cup in 2007 and finished fourth.[65]
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+ France is closely associated with the Modern Olympic Games. At the end of the 19th century, the Baron Pierre de Coubertin suggested having the Olympic Games again. France hosted the Summer Olympics twice, in 1900 and 1924, in Paris. France will host the Summer Olympics in 2024, in Paris. France also hosted the Winter Games three times: in 1924 in Chamonix, in 1968 in Grenoble, and in 1992 in Albertville.
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+ French cuisine has influenced the style of cooking throughout Europe, and its chefs work in restaurants throughout the world.[66]
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+ The roots of modern haute cuisine lie in chefs like La Varenne (1615–1678) and the notable chef of Napoleon, Marie-Antoine Carême (1784–1833). These chefs developed a lighter style of food compared to the food of the Middle Ages. They used fewer spices, and more herbs and creamy ingredients.
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+ Typical ingredients like roux and fish stock, and techniques such as marinading, and dishes such as ragout, were invented. Carême was an expert pâtissier (pastry-maker), and this is still a mark of French cooking. He developed basic sauces, his 'mother sauces'; he had over a hundred sauces in his repertoire, based on the half-dozen mother sauces.
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+ French cuisine was introduced in the 20th century by Georges Auguste Escoffier (1846–1935). He was a genius at organisation. He worked out how to run large restaurants, as in a big hotel or a palace; how the staff should be organised; how the menu was prepared. He had methods for everything. Escoffier's largest contribution was the publication of Le Guide Culinaire in 1903, which established the fundamentals of French cookery. Escoffier managed the restaurants and cuisine at the Savoy Hotel and Carlton Hotel in London, the Hôtel Ritz Paris, and some of the greatest cruise ships.
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+ Escoffier, however, left out much of the culinary character to be found in the regions of France.
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+ Gastro-tourism and the Guide Michelin helped to acquaint people with the rich bourgeois and peasant cuisine of the French countryside in the 20th century. Gascon cuisine has also had great influence over the cuisine in the southwest of France. Many dishes that were once regional have proliferated in variations across the country. Cheese and wine are a major part of the cuisine, playing different roles regionally and nationally.[67][68][69] In the north of France, people often prefer to use butter to cook. In the south, they prefer olive oil and garlic.[70] In France, each region has its own special dish; choucroute in Alsace, quiche in Lorraine, cassoulet in the Languedoc-Roussillon, and tapenade in Provence-Alpes-Côte d'Azur.
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+ In November 2010, French gastronomy was added by UNESCO to its lists of the world's 'intangible cultural heritage'.[71][72]
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+ France is the number one tourist destination in the world. In 2007, 81.9 million foreign tourists visited France.[73] Spain comes second (58.5 million in 2006) and the United States come third (51.1 million in 2006).
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+ Some of the most famous attractions in Paris, are the Eiffel Tower and the Arc de Triomphe. Another one is Mont Saint Michel, in Normandy.[74]
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+ A European Disneyland is located in a suburb east of Paris. The resort opened in 1992 and is also a popular tourist destination in Europe.
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+ Frankfurt is the name of two cities in Germany:
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+ Historical territories and entities, centered in Frankfurt am Main:
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+ Historical territories and entititie, centered in Frankfurt (Oder):
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+ There is a city with a similar spelling:
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+ Franfurt is the family name of: