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What causes air to cool when cumulus clouds are formed?

Warm air moving over the top of a cold front




Air moving over cooler ground




Cold air moving over the top of warm air




Air, warmed by the earth, rises, expands and cools

User Franchesca
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2 Answers

9 votes
the angels to your question is d!!
User Technazi
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10 votes
I believe the answer should be D. Air, warmed by the earth, rises, expands and cools.
User Squashman
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