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Why is the stratosphere almost free of clouds and storms?

AIt is the warmest layer next to the ground
BIt holds no gases of any kind at all
CIts air is very stable with little turbulence
DIt has far more water vapour than the layer below
Answer & Solution
Correct answer: C. Its air is very stable with little turbulence
Warm air sits above cold air there, so the layer is stable and lacks the churning air that makes weather.
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