Change in beak size over time in Darwin's finches is an example of

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Change in beak size over time in Darwin's finches is an example of character displacement, which occurs when two different species in the same ecological niche evolve to have different traits that allow them to reduce competition for resources. In this case, the finches on different islands evolved different beak sizes based on the availability of different types of food, reducing competition between them. Environmental gradient and fundamental niche refer to the environmental conditions and resources that a species can utilize in its habitat, while competitive exclusion refers to one species outcompeting and excluding another from a niche.

Change in Beak Size Over Time in Darwin's Finches Is