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Environmental Science

Environmental Science
At any given time, ______ of the earth is illuminated by the sun.

One-third
Two-thirds
One-fourth
One-half

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Environmental Science
This is used as an index for fuel consumption:

Mean annual temperature
Heating degree-days
Growing degree-days
Consumer price index

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Environmental Science
Charged particles from the sun that travel through space at high speeds are called:

Radiation
Solar flares
Solar wind
The aurora

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Environmental Science
Which one of the following is not a primary pollutant?

Carbon monoxide
Sulpuric acid
Nitrogen oxides
Particulate matter

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Environmental Science
When human body is infected by infection __________ type of cells are activated to defend the body.

monocytes
lymphocytes
leukocytes
erythrocytes

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Environmental Science
The most abundant gas in the stratosphere is:

Chlorofluorocarbons (CFCs)
Ozone (O3)
Oxygen (O2)
Nitrogen (N2)
Carbon dioxide (CO2)

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