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The top documents tagged [homo sapienskingdom]
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Stromatolites: layers of rock with fossils. Origin of Life Big Bang Theory: formation of the universe (20 billion years ago=bya) Earth formed 4.5 bya
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Properties of life. Levels of organization Subatomic particles atoms moleculesorganelles cells tissues organs Organ systems Multicellular ORGANISM! populationcommunityecosystem
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