Environmental Science
The atmospheric greenhouse effect is produced mainly by the:

Absorption and re-emission of infrared radiation by the atmosphere
Absorption and re-emission of visible light by the ground
Absorption and re-emission of visible light by clouds
Absorption and re-emission of ultraviolet radiation by the atmosphere
Absorption and re-emission of visible light by the atmosphere

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Environmental Science
The atmosphere near the earth's surface is "heated from below." Which of the following does not significantly contribute to this heating?

Heat energy from the earth's interior
Convection from a hot surface
Absorption of infrared energy that has been radiated from the surface
Conduction of heat upward from a hot surface

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