Carbon dioxide and water vapour keep the earth:
ANeither too cold
BAlways freezing
CAlways the same
DFree of any air
Answer & Solution
Correct answer: A. Neither too cold
1. Both gases trap part of the outgoing heat.
2. Without them the surface would swing to extremes.
3. They keep the earth neither too cold nor too hot.
4. So the answer is neither too cold.
_Source: NCERT Class 11 Geography, 'Composition and Structure of Atmosphere'_
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