Environmental change and adaptation in Galápagos finches | Middle school biology | Khan Academy

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https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:natural-and-artificial-selection/x0c5bb03129646fd6:adaptation-and-environmental-change/a/adaptation-and-environmental-change

Adaptation by natural selection acting over generations is one important process by which species change over time in response to changes in environmental conditions. Traits that support successful survival and reproduction in the new environment become more common; those that do not become less common. Thus, the distribution of traits in a population changes.

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