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passion was taxonemy, developed a hierarchical classifications scheme and binomial nomenclature
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proposed that the Earth was millions of years old instead of a few thousand.
proposed gradualism, changes in earth's crust due to slow continuous processes -
stated that changes are adaptation to environment are required in an organism's lifetime
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Hyothesis: Plants and animals are capable of producing far more offspring than rsources can support; the "stuggle for existence" is an inescapable consequence
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developed paleontology and catastrophism, that species disappear due to a catastrophic event of the earth's crust
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incorporated gradualism into the theory of uniformitarianism
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published "On the Origin of Species by Means of Natural Selection"
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said species are permanet, perfect, and immutable with increasing complexity
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