Question

keystone species have a large impact on their ecosystem even though their numbers may be relatively few. false true

Explanation:

Keystone species play a crucial - role in an ecosystem. Their presence or absence can cause significant changes in the ecosystem structure and function. For example, sea otters are keystone species. They control the population of sea urchins. If sea otters are removed, sea urchins over - graze kelp beds, which has a cascading effect on many other species in the kelp forest ecosystem. The definition of keystone species emphasizes their large impact relative to their abundance.

Answer:

True