Darwin’s finches evolved on an island. what is the main reason that islands often provide good examples of evolution?

they have many niches.
they have many organisms that live on them.
they allow for automatic biogeographic isolation.
they allow for many variations to exist in species.

The correct answer is (c)They allow for automatic biogeographic isolation.

The fact the island often provide good examples of evolution is that they allow for the biogeographic isolation. The main factor is isolation, being surrounded by the sea it is isolated from the mainland and the island biota, shows very good adaptation which leads to evolution of species more in comparison to the mainland. Islands can have a volcanic origin that will be colonized by adaptation of new conditions and thus, new species evolve over there.

This makes island good example to provide evolution of species.

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explanation:

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