Answers

2015-09-01T21:22:34+05:30
Air movement is due to uneven heating at different parts. mainly air move from place of high temperature to place of low temperature. cold current is moving air with moisture.
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2015-09-01T22:02:50+05:30
Warm currents being lighter move due to air movement.when it rises up it leave a space with low pressure. this space have to be covered, so the cold air moves in to take place.
so being heavy the cold currents move.
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