Multiple choice

What is the term for a species crucial to the survival of a marine ecosystem?

  1. Cornerstone species

  2. Keystone species

  3. Foundation species

  4. Central species
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A keystone species is an organism that has a disproportionately large effect on its environment relative to its abundance, and its removal would cause the ecosystem to collapse.

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