Question

what starts ecological succession?
expressive fertilizer usage
disturbances in the ecosystem
carbon sequestering in the soil

Explanation:

Ecological succession is the process of change in the species structure of an ecological community over time. It is initiated by disturbances (like natural disasters, human - made disruptions) that alter the existing ecosystem. Excessive fertilizer usage is more related to pollution and eutrophication, and carbon sequestering in the soil is about carbon storage, not starting succession. So disturbances in the ecosystem start ecological succession.

Answer:

B. disturbances in the ecosystem