Question

A species of birds exists in stasis for many thousands of years. Suddenly, their environment changes, causing their primary tree of sheltering choice to die. To adapt to their new environment, the birds must nest in trees that are much higher, requiring more wing strength. Some birds die. The remaining birds have the wing strength necessary for the new habitat and thus, return to a state of stasis. This is an example of ____________.

Answer 1

Answer:

this is an example of natural selection.