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What is the most highly variable gas in our atmosphere ?
EXPLANATION
Forest Carbon Sequestration, Carbon Pools & I
- Atmospheric Composition:
- Permanent atmospheric gases have nearly constant volume fractions: Nitrogen ($78.08\%$), Oxygen ($20.95\%$), and Argon ($0.93\%$).
- Water Vapour ($H_2O$) is the most highly variable gas in the Earth's atmosphere, ranging from less than $0.01\%$ in cold polar and desert air up to over $4.0\%$ by volume in warm, humid equatorial regions. (Correct answer: Option 3)
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