Biology

The correct answer is C.A species that plays a critical role in maintaining the structure of an ecological community.

Keystone species are those that have a disproportionately large effect on the structure and functioning of an ecosystem relative to their abundance or biomass. Their presence and activities help maintain the stability, diversity, and health of the ecosystem. The role of a keystone species is crucial, as their removal can lead to significant changes in the ecosystem, including the loss of biodiversity.

A.A species that is most abundant in an ecosystem is incorrect because keystone species are not ...