The gray wolf was reintroduced into Yellowstone National Park in 1995, and the population grew.

Question

A food web.Short description, A food web.,Long description,
The illustration is entitled Part of the Food Web for Yellowstone National Park.

Gray Wolves feed on elk and bison
Elk feed on aspen trees and grasses.
Bison feed on grasses.

Question
Which ,begin emphasis,most,end emphasis, likely resulted from the growing wolf population?

Answer options with 4 options
A.
population of elk increased

C.
population of grasses decreased

B.
population of bison increased

D.
population of Aspen trees increased

Answer 1

The answer is D. population of Aspen trees increased.

As the gray wolf population grew, they began to effectively control the population of elk, which are primary grazers of aspen trees. With fewer elk to feed on them, aspen trees had a better chance to grow and regenerate, leading to an increase in their population.