Which event would most likely lead to primary succession in a forest ecosystem?

• A. A severe storm that knocks down many trees
• B. A volcanic eruption that covers the area with new lava
• C. A forest fire that burns down most of the trees
• D. An outbreak of disease that kills a specific tree species

Answer: (B)

Verified step by step guidance

1. Understand the concept of primary succession: Primary succession occurs in an area where there was no previous life or soil, such as bare rock or newly formed land. It involves the gradual establishment of ecosystems starting from pioneer species like lichens and mosses.
2. Analyze the options provided: Evaluate each event to determine whether it creates a completely barren environment without soil or existing life.
3. Option 1: A severe storm that knocks down many trees. This event does not remove soil or completely eliminate life, so it would not lead to primary succession.
4. Option 2: A volcanic eruption that covers the area with new lava. This event creates a barren environment with no soil or life, making it a clear example of a situation that would lead to primary succession.
5. Option 3 and 4: A forest fire or disease outbreak. Both events may significantly alter the ecosystem but leave soil and some life intact, leading to secondary succession rather than primary succession.