Environmental Science
If the earth's average surface temperature were to increase, the amount of radiation emitted from the earth's surface would ____, and the wavelength of peak emission would shift toward ____ wavelengths.

Decrease, shorter
Increase, longer
Decrease, longer
Increase, shorter

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Environmental Science
Low clouds retard surface cooling at night better than clear skies because:

The formation of the clouds releases latent heat energy
The clouds are better conductors of heat than is the clear night air
The clouds absorb and radiate infrared energy back to earth
The clouds start convection currents between them
The water droplets in the clouds reflect infrared energy back to earth

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