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Question

An important reason for the large daily temperature range over deserts is:

A
There is little water vapor in the air to absorb and re-radiate infrared radiation
B
Free convection cells are unable to form above the hot desert ground
C
The light-colored sand radiates heat very rapidly at night
D
Dry air is a very poor heat conductor
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Solution
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Correct option is A. There is little water vapor in the air to absorb and re-radiate infrared radiation

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