A large number of breeding birds in Yellowstone nest and feed in stands of aspen, willow and cottonwood. How do you think the return of the wolf will impact these populations?

The correct answer is - By increasing tree abundance, wolves will indirectly boost bird population sizes.

Explanation:

The return of wolves certainly affects the population of the birds but not directly as wolves not prefer birds as their prey and looks for the larger prey, however, they also hunt birds but when they did not get their preferred prey. Due to the wolves, there would be more space for nests in those increased trees.

Thus, the correct answer is - By increasing tree abundance, wolves will indirectly boost bird population sizes.

c. would be the answer : )

explanation:

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands