Environmental Science
Which of the following helps to explain why even though northern latitudes experience 24 hours of sunlight on June 22, they are not warmer than latitudes further south?

Solar energy is spread over a larger area in northern latitudes
All of these
Some of the sun's energy is reflected by snow and ice in the northern latitudes
Increased cloud cover reflects solar energy in the northern latitudes
Solar energy is used to melt frozen soil in the northern latitudes

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

There is little water vapor in the air to absorb and re-radiate infrared radiation
Free convection cells are unable to form above the hot desert ground
The ozone content of desert air is very low
The light-colored sand radiates heat very rapidly at night
Dry air is a very poor heat conductor

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