Question

What was one way the wolves influence the movement of water in the park?

A) They create dams in rivers.
B) They alter the behavior of other animals.
C) They contribute to erosion.
D) They have no impact on water movement.

Answer 1

The reintroduction of wolves into Yellowstone National Park has impacted the movement of water by altering the grazing behavior of elk, which has positive effects on vegetation and fish habitats.

Step-by-step explanation:

The reintroduction of wolves into Yellowstone National Park has had a significant impact on the movement of water in the park. When wolves prey on elk, it alters the grazing behavior of the elk, causing them to avoid browsing near streambanks. This change in behavior allows vegetation like willow and cottonwood seedlings to grow, which in turn decreases erosion and provides shade to the creeks. These habitat changes benefit fish and may also benefit other species like beavers.