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11.Organisms and Populations
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$A$ : Estuary constitutes one of the most productive ecosystem.
$R$ : It represents transition zone between two populations of a species.
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.
Solution
Estuary is a transition zone between fresh water and marine ecosystem.
Standard 12
Biology
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