单选题In many areas atoll clouds (clouds of vertical development) are produced over small islands. These are the result of（）.Arising air currents produced by the warm islandsBwarm air from the sea rising over higher land areasCcool land air mixing with warm sea airDdescending air over the islands
单选题
In many areas atoll clouds (clouds of vertical development) are produced over small islands. These are the result of（）.
A
rising air currents produced by the warm islands
B
warm air from the sea rising over higher land areas
C
cool land air mixing with warm sea air
D
descending air over the islands
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