What is the main difference between primary and secondary succession? A. Primary succession involves plant populations, and secondary succession involves animal populations. B. Primary succession occurs on land, and secondary succession occurs in aquatic environments. C. Primary succession occurs on barren land, and secondary succession occurs where soil is present. D. Primary succession occurs overnight, and secondary succession occurs over hundreds of years.

Primary succession occurs following an opening of a pristine habitat, for example, a lava flow, an area left from retreated glacier, or abandoned strip mine. In contrast, secondary succession is a response to a disturbance, for example, forest fire, tsunami, flood, or an abandoned field.

c

Explanation:Primary succession occurs on barren land, and secondary succession occurs where soil is present.

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hope that !         : )

for a different answer set the answer would be because the oxygen in the water had depleted (apex)