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Environmental Science

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

monocytes
leukocytes
erythrocytes
lymphocytes

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Environmental Science
Of the gases listed below, which is not believed to be responsible for enhancing the earth's greenhouse effect?

Chlorofluorocarbons (CFCs)
Carbon dioxide (CO2)
Nitrous oxide (N2O)
Methane (CH4)
Molecular oxygen (O2)

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Environmental Science
The deepest radiation inversion would be observed:

In polar regions in winter
At the top of a high mountain in winter
On a desert in winter
In a deep valley during the summer
At the equator any day of the year

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Environmental Science
Sunlight passes through a thicker portion of the atmosphere at

Sunrise
Night
Both a and c
Sunset
Noon

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Environmental Science
Oil spills are a source of pollution for

water
air and noise
land and water
land and air

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Environmental Science
Eutrophication of water bodies resulting to killing of fishes is mainly due to non-availability of

Essential minerals
Food
Light
Oxygen

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