Solve this multiple-choice question and choose the correct option.

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Atmospheric absorption (greenhouse gases): The Sun’s infrared radiation is strongly absorbed by which gases in the Earth’s atmosphere? Identify the key IR-absorbing constituents among the choices. Choose the correct option.

Difficulty: Easy

Carbon dioxide
Water vapours
Carbon dioxide and water vapours
Ozone

Correct Answer: Carbon dioxide and water vapours

Explanation:

ConceptEarth’s atmosphere absorbs IR mainly due to water vapour and carbon dioxide (major greenhouse gases). Ozone is most important for absorbing UV, not IR.

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