$A$: Agriculture and aquaculture are man-maintained ecosystems.
$R$: All biotic and abiotic factors are managed by humans in these ecosystems.

  • A
    Assertion and Reason both are correct and Reason is the correct explanation of Assertion.
  • B
    Assertion and Reason both are correct but Reason is not the correct explanation of Assertion.
  • C
    Assertion is correct,but Reason is incorrect.
  • D
    Both Assertion and Reason are incorrect.

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