Which factor can cause secondary succession?

A. clear cutting

B. glacial melting

C. competition

D. predation

Answer

Clear-cutting can cause secondary succession by creating space for new organisms to colonize and thrive.

Explanation

Secondary succession is the process of ecological succession that occurs after a disturbance in an ecosystem. It refers to the gradual and predictable changes that happen when a previously established community is disrupted or destroyed, allowing new species to colonize and thrive. In the case of the options provided, clear-cutting (the removal of all vegetation in an area) can cause secondary succession as it creates a vacant space for new plants and organisms to inhabit. However, glacial melting, competition, and predation do not directly cause secondary succession.