Question

14 multiple choice 1 point a sea otter is a(n) ______ that influences the survival of many other species in its ecosystem. ∘ threatened species ∘ endangered species ∘ abiotic factor ∘ keystone species

Explanation:

A keystone species is one that has a disproportionately large effect on its ecosystem relative to its abundance, influencing the survival of many other species. Sea otters are keystone species because they control sea urchin populations, which in turn affects kelp forests and the entire ecosystem. Threatened/Endangered refer to conservation status, and abiotic factors are non - living, so they don't fit.

Answer:

D. Keystone Species