Biology

The correct answer is: D.Secondary Succession.

Secondary succession occurs in an area that was partially disturbed or destroyed but still has some remaining soil, nutrients, and possibly some surviving organisms. This type of succession happens after events like wildfires, floods, or human activities such as farming or logging. Since soil is still present, secondary succession tends to proceed faster than primary succession, which starts in a lifeless area with no soil (like after a volcanic eruption or glacier retreat).

Here's why the other terms don't fit:

A.Keystone Species: This refers to a species that has a disproportionately large impact on its ecosystem, relative to its abundance. It doesn't describe t...