Question

Which explains why secondary succession generally occurs more rapidly in an area than does primary succession?
Question 8 options:

Average precipitation is higher.

Moderate climatic conditions exist.

Pioneer species are microscopic.

Soil formation has already occurred.

Answer 1

Secondary succession generally occurs more rapidly in an area than does primary succession because soil formation has already occurred.

Explanation:

During secondary succession, there is usually an initial ecosystem in the environment that was decimated by a calamity like fire or floods. Higher plants like grass and shrubs can already begin growing in the environment. Therefore, the process of soil formation is not required because soil already exists.

This is unlike primary succession where the environment is newly formed and majorly made of rocks (maybe after a volcanic eruption). Therefore pioneers species like lichen and moss are required in the process of breaking down rocks into the soil and releasing the nutrients, by weathering,  before higher plants can take over.

Learn More:

For more on primary and secondary succession check out;

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