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9 May, 00:26

Darwin believed that the various species of finches on the Galapagos islands came from one common ancestor. he believed they evolved by what?

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  1. 9 May, 00:28
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    He believed they evolved because of he food source. Whether the food was on a tree so they must have long necks or if the food was on the ground, therefore they did not need long necks.
  2. 9 May, 00:46
    0
    adaptive radiation

    (the diversification of a group of organisms into forms filling different ecological niches)
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