1.

Between heights of 20 to 50 km in the stratosphere the temperature rises from about \[-{{55}^{o}}C\] to \[-{{0}^{o}}C\] because of:

A.  Large absorption of solar radiation by pure air.
B.  Lack of vertical movement of air.
C.  Presence of ozone gas.
D.  Presence of minute particles.
Answer» D.  Presence of minute particles.


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