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Environmental Science

Environmental Science
________ is the degradation of land in arid, semi-arid and dry sub-humid areas.

Ecosystem
Desertification
Vegetation
Land fertility

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Environmental Science
One atom of chlorine can destroy over __________ molecules of ozone.

1000
100000
10000
25000

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Environmental Science
The earth's radiation is often referred to as ________radiation, while the sun's radiation is often referred to as _________radiation.

Longwave, longwave
Shortwave, shortwave
Shortwave, longwave
Longwave, shortwave

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Environmental Science
Fine organic or inorganic particles suspended in air is called

aerosol
none of these
gaseous pollutant
particulate pollutant

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Environmental Science
Mobile combustion accounts

40-50% of air pollution
50-60 % of air pollution
5-10 % of air pollution
10-20% of air pollution

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Environmental Science
Air pollution can be of

both a and b
natural origin
artificial or man made origin
b only

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