Question

Elk herds in Yellowstone National Park are herbivores that eat on the available vegetation. Which factor is important to ensure the stability of this ecosystem?
Responses
A The introduction of another herbivorous species to increase competition.The introduction of another herbivorous species to increase competition.
B The introduction of more elk from other parks to increase the herd population.The introduction of more elk from other parks to increase the herd population.
C The predators, such as grey wolves, to keep the elk population from growing too large.The predators, such as grey wolves, to keep the elk population from growing too large.
D Ensuring that only vegetation that is part of the elk’s diet is allowed to grow in the park.Ensuring that only vegetation that is part of the elk’s diet is allowed to grow in the park.

Answer 1

C — The predators, such as grey wolves, to keep the elk population from growing too large.

Explanation: Predators regulate herbivore numbers, preventing overgrazing and maintaining plant diversity and ecosystem balance. Introducing more elk or additional herbivores would increase competition or overconsumption, and restricting vegetation would reduce biodiversity and resilience.