In 1995, wolves were reintroduced in Yellowstone National Park, causing a trophic
cascade. Which statement best describes an impact that the reintroduction of
wolves had on the ecosystem?
Elk populations were restored to their highest levels in over 100 years
The wolves outcompeted all the other carnivores for food and resources
Biodiversity steadily decreased in the area because the wolves hunted most of
the primary consumers
Elk could no longer overgraze the vegetation and dominate the habitat that was
needed by other species



Answer :

Final answer:

Wolves reintroduction in Yellowstone Park caused a trophic cascade by altering elk behavior and vegetation growth, benefiting the ecosystem.


Explanation:

Reintroduction of wolves in Yellowstone National Park in 1995 had a profound impact on the ecosystem by triggering a trophic cascade. The wolves preyed on elk, altering their behavior and reducing overgrazing on vegetation near streambanks. This led to the regrowth of important vegetation, benefiting various species like beavers and improving fish habitats.


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