Which of the following is correct?

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Primary succession occurs faster than secondary succession

Secondary succession occurs faster than primary succession

Primary and secondary succession occur at the same rate

Primary and secondary succession both are slow

answer is B.

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Detailed Solution

Succession is a process of formation of a new ecosystem from a barren or destroyed area. Succession is of two types: primary succession and secondary succession.

Primary succession is the former succession, whereas succession that takes place after primary succession is called secondary succession.
Secondary succession takes place faster than primary succession.
In secondary succession, the species that invade depends upon the condition of soil, availability of water and environment.
As secondary succession is already provided with the surface where an ecosystem has previously existed, some soil and sediments are already present there.
It is easy for secondary succession to allow the community growth to take place easily and faster.
Hence, the rate of succession is much faster than primary succession, and the climax is also reached more quickly.

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