Environmental Science
Thermal belts are:

Cold, below-freezing air found at the top of a mountain
Pockets of cold air resting on a valley floor at night
Warmer hillsides that are less likely to experience freezing conditions
Pockets of warm air resting on a valley during the afternoon

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Environmental Science
The albedo of the earth's surface is only about 4%, yet the combined albedo of the earth and the atmosphere is about 30%. Which set of conditions below best explains why this is so?

High albedo of clouds, high albedo of water
Low albedo of clouds, high albedo of water
Low albedo of clouds, low albedo of water
High albedo of clouds, low albedo of water

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