which type of succession is faster? primary secondary

Answer:

B. secondary

Brief Explanations:

Secondary succession occurs in areas where a disturbance has destroyed an existing community but left the soil intact. Since soil is already present, it has a head - start compared to primary succession (which starts on bare rock with no soil). In secondary succession, there are already seeds, roots, and other plant parts in the soil, and there may also be some remaining organisms. This allows for a faster recolonization and development of a new community compared to primary succession, where everything (including soil formation) has to start from scratch.