22 mar 855 año aC - Aristotle
Descripción:
 Aristotle did not actually believe in the atomic theory. He believed that instead of everything being made up of atoms, everything was made up of four elements. Earth, Fire, Water, and Air. His theory thought that all substances had small amounts of these four elements. 
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fecha:
22 mar 855 año aC
Ahora mismo
 ~ 2882 years ago 
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