The introduction of wolves into Yellowstone National Park in 1991 resulted in
A) a decline in habitat for the entire community.
B) ecological changes involving numerous plant and animal species.
C) the migration of most of these wolves out of the park and back to Canada.
D) the death of all of the wolves, likely due to an insufficient amount of available prey.

Question

Quizplus · Accepted Answer

The reintroduction of wolves in Yellowstone in 1991 resulted in significant ecological changes involving numerous plant and animal species. The presence of wolves helped control the elk population, which in turn allowed vegetation to recover in certain areas. As a result, bird and beaver populations increased, and the physical geography of the landscape changed due to the reestablishment of plant species.

The Introduction of Wolves into Yellowstone National Park in 1991