What causes storm clouds to develop? 1
A Dry air rising and cooling
B
Humid air rising and cooling
C Dry air descending and warming
D
Humid air descending and warming

Moisture in the air is also responsible for making clouds. Unstable air forms when warm, moist air is near the ground and cold, dry air is up above.As the air lifts higher and higher, it causes a storm cloud to grow taller and taller. Thunderstorm clouds can rise up to 10 miles into the air!

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