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  1. Assertion (A) : After carbon, nitrogen is the most abundant element in the biosphere.
    Reason (R) : Nitrogen is essential for synthesizing the living matter in nature.
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    1. Both (A) and (R) are individually true and (R) is the correct explanation of (A)
    2. Both (A) and (R) are individually true but (R) is not the correct explanation of (A)
    3. (A) is true but (R) is false
    4. (A) is false but (R) is true
Correct Option: B

NA



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