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In the 4-th century BC in Greece, there were only a few schools, and none taught science. It was left to philosophers to come up with logical explanations of the world. Aristotle studied under the famous philosopher Plato, who regarded thought or the idea as the basis of all knowledge. Aristotle later decided that theories about the world must be based on the close study and classification of nature. Aristotle catalogued the known species of animals and plants, believing they were made of four elements: earth, water, fire, and air. He also believed that a fifth element, ether, surrounded the Earth.
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Aristotle studied under the famous philosopher Plato, who regarded thought or the idea as the basis of …