The greatest instability of the atmosphere occurs when the air is both_______ . Tropical weather, with its almost daily thunderstorm activity, is a perfect example of this.
A.warm and moist
B.cool and dry
C.warm and dry
D.cool and moist
正确答案是A
The greatest instability of the atmosphere occurs when the air is both_______ . Tropical weather, with its almost daily thunderstorm activity, is a perfect example of this.
A.warm and moist
B.cool and dry
C.warm and dry
D.cool and moist
正确答案是A