Environmental Science
The formation of a climax community from an abandoned farm land is a an example of

Autogenic succession
Secondary succession
Allogenic succession
Primary succession

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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?

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

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