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  • Gray wolves at Yellowstone Park are an example of a(n) __...
Multiple choice

Gray wolves at Yellowstone Park are an example of a(n) _______ species.

  1. keystone

  2. umbrella

  3. foundation

  4. nominal

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gray wolves are a classic example of a keystone species because their presence regulates prey populations, which in turn affects vegetation and the entire ecosystem structure.

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