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Environmental Science

Environmental Science
Which of the following is considered a variable gas in the earth's atmosphere?

Argon
Oxygen
Nitrogen
Water vapor

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Environmental Science
If the sun suddenly began emitting more energy, the earth's radiative equilibrium temperature would:

Begin to oscillate
Remain the same
Increase
Decrease

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Environmental Science
An example of nitrogen fixing bacteria in the soil

Rhizobium
Nitrobacter
Azotobacter
Nostoc

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Environmental Science
_________ ecosystems are maintained artificially by man.

Brackish
Man-made
Marine
Artificial

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Environmental Science
The gas that absorbs most of the harmful ultraviolet radiation in the stratosphere:

Nitrous oxide
Chlorofluorocarbons
Carbon dioxide
Ozone
Water vapor

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Environmental Science
One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively identified as

Methane and CFCs
N2O and CO2
CFCs and CO2
Methane and CO2
CFCs and N2O

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