Global warming is attributed to the presence of which of the following gases in the atmosphere?

1.Methane

2.Sulphur dioxide

3.Surface ozone

4.Nitrogen dioxide

5.Carbon dioxide

A1, 2, 3 and 5 only

B1, 3 and 5 only ✓ Correct

C1, 3, 4 and 5 only

D1, 2, 4 and 5 only

Correct answer: (B) 1, 3 and 5 only

Explanation

Methane, surface ozone and carbon dioxide are the greenhouse gases among the listed ones that drive warming.

Methane is a powerful greenhouse gas from farming, waste and fossil fuels.

Surface ozone acts as a greenhouse gas in the lower atmosphere.

Carbon dioxide is the leading long-lived greenhouse gas from fossil fuel burning.

Sulphur dioxide forms cooling aerosols rather than warming the atmosphere.

Nitrogen dioxide is chiefly an air pollutant and smog precursor, not a major greenhouse gas.

Distinguishing warming gases from cooling or reactive ones sharpens climate accounting.

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