Ecological succession represents .........

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(D) Ecological succession is the gradual and predictable change in the species composition of a given area. It involves the following processes: $1$.

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All of the above

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(D) Ecological succession is the gradual and predictable change in the species composition of a given area. It involves the following processes: $1$. The colonization of a new habitat by pioneer species. $2$. The gradual replacement of one community by another (seral stages) until a stable climax community is established. $3$. During this process,new species adapted to the changing environment emerge,some existing species may go extinct due to competition or habitat modification,and the overall biotic community structure changes significantly. Therefore,all the given options are correct aspects of ecological succession.

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