题目内容

Nights in deserts are cold because

A. winds originate at the North and South poles
B. the relative humidity is very high
C. there is a poor insulating effect from the desert and the dry air
D. nights are cloudy
E. the ocean currents prevent humidity

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Nights in deserts are cold because

A. winds originate at the North and South poles B. the relative humidity is very high C. there is a poor insulating effect from the desert and the dry air D. nights are cloudy E. the ocean currents prevent humidity

Trees of wet tropical rainforests tend to be

The biome most likely to be found on the top of a very tall mountain is

The two most important factors in determining the climate of an area are

The current rate of species extinction is

A. winds originate at the North and South poles
B. the relative humidity is very high
C. there is a poor insulating effect from the desert and the dry air
D. nights are cloudy
E. the ocean currents prevent humidity