Environmental Science
When a liquid thermometer is held in direct sunlight,

It will measure a much lower temperature than that of the air
It will measure the temperature of the sun rather than the air
It will measure a much higher temperature than that of the air
It will accurately measure the air temperature

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

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

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