natural selection evolution

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Mechanisms of Evolution

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Charles Darwin 1809-1882

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Darwin

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Charles Darwin 1809-1882

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natural selection evolution

evolution

Darwin

galapagos islands

Finches

beaks

proof

vestigial structures

embryology

fossils

Whale Bones

slow change over time

new species

natural selection

reproductive success

fitness

competition

limited resources

Organisms produce more offspring than can survive

environmental factors

genetic variation