Question

select the correct answer.
which form of succession replaces an existing system after a calamity?
○ a. primary succession
○ b. secondary succession
○ c. seasonal succession
○ d. ecological succession

Explanation:

• Primary succession: Occurs in lifeless areas where soil has not yet formed (e.g., after a volcanic eruption creating new land).
• Secondary succession: Happens in areas where a disturbance (like a fire, flood, or human - caused calamity) has destroyed an existing ecosystem but left the soil intact. So, it replaces an existing system after a calamity.
• Seasonal succession: Refers to short - term, seasonal changes in an ecosystem (e.g., changes in plant species composition from spring to winter in a temperate forest).
• Ecological succession: Is the broader term that encompasses both primary and secondary succession (and other types of succession like seasonal in a more general sense), but it is not the specific form that replaces an existing system after a calamity.

Answer:

B. secondary succession