$A$ : Niche become general and broader during biotic succession.
$R$ : Species diversity increases but organic matter is decreased.
$A$ : Niche become general and broader during biotic succession.
$R$ : Species diversity increases but organic matter is decreased.
- A
Assertion and Reason both are correct and also correct explanation.
- B
Assertion and Reason both are correct but not explanation of assertion.
- C
Assertion is correct, but Reason is incorrect.
- D
Both Assertion and Reason are incorrect.
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