Environmental Science
How much radiant energy will an object emit if its temperature is at absolute zero?

The same as it would at any other temperature
Depends on the chemical composition of the object
None
The maximum theoretical amount

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Environmental Science
Although the polar regions radiate away more heat energy than they receive by insolation in the course of a year, they are prevented from becoming progressively colder each year by the:

Release of latent heat to the atmosphere when polar ice melts
Circulation of heat by the atmosphere and oceans
The insulating properties of snow
Conduction of heat through the interior of the earth
Concentration of earth's magnetic field lines at the poles

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