Question

what kind of succession occurs when soil is already present? secondary primary

Explanation:

Secondary succession occurs in areas where soil is already present. It follows a disturbance (like a fire or flood) that clears the area but leaves the soil intact. In contrast, primary succession happens in lifeless areas with no soil (e.g., bare rock after a volcanic eruption). Since the question specifies that soil is already present, the correct answer is secondary succession.

Answer:

secondary