Environmental Science
Most harmful environmental pollutants are

non-biodegradable chemicals
human organic wastes
natural nutrients in excess
waste animal feed

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Environmental Science
At night, low clouds:

Enhance the atmospheric greenhouse effect
Have no effect on the atmospheric greenhouse effect
Are often caused by the atmospheric greenhouse effect
Weaken the atmospheric greenhouse effect

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Environmental Science
If a glass of water were surrounded by saturated air:

The level of the water in the glass would not change
The water's temperature would slowly increase
The water's temperature would slowly decrease
The level of the water in the glass would slowly decrease

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