Environmental Science
The lag in daily temperature refers to the time lag between the:

Minimum and maximum temperature for a day
Sunrise and sunset
Time of maximum solar radiation and the time of maximum temperature
Time of minimum temperature and the time of maximum solar radiation
Minimum and maximum solar energy received at the surface for a given day

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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?

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

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