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Environmental Science

Environmental Science
The darkening of the skin due to arsenic poisoning is called

Black syndrome
None of these
Diffuse melanosis
Skin scaling

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Environmental Science
Atmospheric humidity is measured by

Auxanometer
Hygrometer
Photometer
none

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Environmental Science
Nitrogen gas returns to the atmosphere by the action of

Denitrifying bacteria
Nitrifying bacteria
Nitrogen fixing bacteria
Nitrate fertilizers

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Environmental Science
The limitating factor in temperate and boreal forest is

Frost
Oxygen
Nutrients
Sunlight

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Environmental Science
World wildlife week is observed during

Third week of October
First week of September
Last week of October
First week of October

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Environmental Science
During the afternoon the greatest temperature difference between the surface air and the air several meters above occurs on a:

Cloudy, calm afternoon
Clear, windy afternoon
Clear, calm afternoon
Cloudy, windy afternoon

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