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

A) there is less biodiversity in the ecosystem.

B) the population of most species decreases.

C) Biodiversity in the ecosystem increases.

D) The ecosystem has more keystone species.

Answer: C

Explanation: Biodiversity in the ecosystem increases (just took the test)

There is less biodiversity in the ecosystem.

Explanation:

Since the barren ground doesn't provide suitable living conditions for most of the living organisms, the ones that need the lest resources to survive create the primary succession, usually the mosses and lichens. The organisms of the primary succession provide biomass, so the ground is mixing with it, thus new soil is forming.