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Assertion (A)    :  Increase in carbon dioxide would melt polar ice.

Reason    (R)     : Global temperature would rise.

  • A.Both A and R are true and R is the correct explanation of A.
  • B.Both A and R are true but R is NOT the correct explanation of A.
  • C.Both A and R are false.
  • D.A is false but R is true.

Answer: A

Correct answer: Both A and R are true and R is the correct explanation of A.

Carbon dioxide traps outgoing infrared radiation, so more of it raises the global temperature - and warmer air and oceans are what melt the polar ice. The temperature rise is the mechanism connecting the two. Both are true and R explains A.

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