A - 80% of total global carbon is dissolved i | vedclass

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(D) Assertion $(A)$: The statement is incorrect. According to the $NCERT$ textbook,$71\%$ of the total global carbon is dissolved in the oceans,not $8

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$A$ is incorrect,$R$ is correct.

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(D) Assertion $(A)$: The statement is incorrect. According to the $NCERT$ textbook,$71\%$ of the total global carbon is dissolved in the oceans,not $80\%$.Reason $(R)$: The statement is correct. Carbon constitutes $49\%$ of the dry weight of organisms and is the second most abundant element in living organisms after oxygen.

$A$ - $80\%$ of total global carbon is dissolved in the oceans.
$R$ - The dry weight of organisms consists of $49\%$ carbon.

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$A$ - $80\%$ of total global carbon is dissolved in the oceans.$R$ - The dry weight of organisms consists of $49\%$ carbon.