Regarding assertion and reason, choose the correct answer.
Assertion [A]: Global warming reduces pH levels in the oceans.
Reason [R]: Carbon dioxide dissolves in water to form carbonic acid.

Both A and R are true, and R explains A

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Both A and R are true, but R does not explain A

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A is true and R is false

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Both A and R are false

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Solution

The correct option is A Both A and R are true, and R explains A
Global warming mainly results from an increase in the level of greenhouse gases such as carbon dioxide and methane in the atmosphere. Carbon dioxide dissolves in water to form carbonic acid. This results in an apparent decrease in pH levels in the oceans, adversely affecting marine life.

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Regarding assertion and reason, choose the correct answer. Assertion [A]: Global warming reduces pH levels in the oceans. Reason [R]: Carbon dioxide dissolves in water to form carbonic acid.

Regarding assertion and reason, choose the correct answer.
Assertion [A]: Global warming reduces pH levels in the oceans.
Reason [R]: Carbon dioxide dissolves in water to form carbonic acid.