Which of the following is an example of an event that would set up the scene for primary succession?
A) a dense landslide of mountain rocks covering an entire valley
B) a fire that burns off all of the surface vegetation
C) an agricultural field that is abandoned
D) a lake that dries up killing all of the aquatic plants
E) all of these set the scene for secondary succession NOT primary succession

Question

Quizplus · Accepted Answer

Primary succession occurs in areas where there is no existing soil, so a landslide that covers an entire valley with rocks would remove any existing soil and thus set the scene for primary succession to begin. The other options all involve some degree of existing soil or vegetation, making them examples of secondary succession rather than primary succession.

Which of the Following Is an Example of an Event