Question

an extreme disturbance happens in an ecosystem. how does an ecosystem change as succession happens after this disturbance?

a. the population of most species decreases.
b. the ecosystem has more keystone species.
c. biodiversity in the ecosystem increases.
d. there is less biodiversity in the ecosystem.

Explanation:

Ecological succession after a disturbance leads to an increase in biodiversity. Initially, pioneer species colonize. Over time, more complex species establish. This results in a more diverse ecosystem with various niches and interactions. For example, after a forest fire (disturbance), grasses (pioneer) grow first. Then shrubs, small trees, and finally a mature forest with many species (high biodiversity). So, as succession progresses, biodiversity increases.

Answer:

C. Biodiversity in the ecosystem increases.