Question

which of the following could reset the process of secondary succession? clearcutting or plowing by humans an increase in invasive species excess rainfall

Explanation:

Secondary succession occurs in areas where a disturbance has destroyed an existing community but left the soil intact. Clear - cutting or plowing by humans removes the existing vegetation (similar to a disturbance in secondary succession context). An increase in invasive species may affect the community but not reset the succession process in the same way as a major physical disturbance. Excess rainfall is a relatively minor environmental factor compared to human - induced clear - cutting or plowing in terms of resetting succession.

Answer:

clear - cutting or plowing by humans