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Assertion (A) : Carbon dioxide is one of...

Assertion (A) : Carbon dioxide is one of the important greenhouse gases.
Reson (R) : It is largely produced by respiratory function of animals and plants. a)Both A and R are correct and R is the correct explanation of A. b).Both A and R are correct but R is not the correct explanation of A. c)Both A and R are not correct. d)A is not correct but R is correct.

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