The atmosphere contains a life-giving gas for plants, which is:
APure nitrogen
BPure hydrogen
CPure methane
DCarbon dioxide
Answer & Solution
Correct answer: D. Carbon dioxide
1. The air serves animals and plants differently.
2. Oxygen serves humans and animals.
3. Carbon dioxide is the life-giving gas for plants.
_Source: NCERT Class 11 Geography, 'Composition and Structure of Atmosphere' (kegy207)_
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