A) The establishment of a new biotic community is very fast in its primary phase.
B) The numbers and types of animals remain constant.
C) The changes lead to a community that is in near equilibrium with the environment and is called pioneer community.
D) The gradual and predictable change in species composition occurs in a given area.
Correct Answer: D
Solution :The gradual and fairly predictable change in the species composition of a given area is called ecological succession. Hence, the correct option is [d].
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