$A $ : Ecological pyramids cannot explain all the vital functions of any ecosystem.

$R$ : Pyramids actually does not explain the role of organisms working at more than one trophic levels.

  • 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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