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Carbon dioxide and water vapour are found only up to what height?
A90 km
B120 km
C32 km
D13 km
Answer & Solution
Correct answer: A. 90 km
1. Oxygen fades by 120 km.
2. Carbon dioxide and water vapour stop at 90 km.
3. Both are variable gases.
_Source: NCERT Class 11 Fundamentals of Physical Geography, Chapter 8, Composition and Structure of Atmosphere._
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