Which of the Following are Examples Where Primary Succession Could

Question

Which of the following are examples where primary succession could occur?
A) A volcano erupted and created new bedrock
B) A tornado clears farm land
C) A glacier retreats and exposes substrate
D) Waves that sweep the shore

Accepted Answer

Primary succession occurs in environments where there is no pre-existing soil or vegetation. In both scenarios, the volcano and the glacier retreat, there is an exposure of new substrate, which is necessary for primary succession to occur. The other choices, a tornado clearing farm land and waves sweeping the shore, do not necessarily result in the exposure of new substrate and therefore are not examples of primary succession.