Unlike secondary succession, primary succession

Ahas the challenge of occurring in areas where no community exists at all.
Bleads to an increased number of different species over time.
Coccurs in an area where existing communities still exist.
Dproceeds at a much faster rate.

Verified Answer :

Unlike secondary succession, primary succession :A.  Has the challenge of occurring in areas where no community exist at  all
Usually, primary succession occur in an environment that usually lacking in soil, such as area after landed by lava or glacier

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