Question

Assertion :The concentration of methane in the atmosphere has more than doubled in the last 250 years. Reason: Wetlands and rice fields are the major sources of methane.

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

Answer 1

Answer: (A)

• The cause of the rapid increase in methane emissions since 2007 has puzzled scientists.
• New research finds some surprising culprits in the methane surge and shows that fossil fuel sources, Wetlands and rice fields have played a much larger role over time than previously estimated.
• Hence, The concentration of methane in the atmosphere has more than doubled in the last 250 years because of Wetlands and rice fields are the major sources of methane.
• So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.'.