Charles darwin noticed that finches on different islands of the galapagos islands were similar but that their beaks differed. what explanation for these differences did he propose?
a. the beaks of the finches are adapted to the way the bird usually gets food.
b. the beaks of the finches are randomly selected by genetic mutation.
c. the different beaks would one day evolve into identical beaks.
d. beak size is related to the size of the finch.
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