The density of the gases (present in air) decreases with increasing al – McqOptions

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1.	The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the?
A.	Ionosphere
B.	Troposphere
C.	Stratosphere
D.	None of these
Answer» C. Stratosphere

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