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Environmental Science

Environmental Science
A human population is small, there is a greater chance of :

genetic drift
mutation
natural selection
gene flow

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Environmental Science
Which of the following will decrease in a rising parcel of air?

Relative humidity
Specific humidity
All of these
Absolute humidity

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Environmental Science
Acid rain contains

Hydrochloric acid
Sulphuric acid
Acetic acid
Oxalic acid

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

Diffuse melanosis
Skin scaling
None of these
Black syndrome

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Environmental Science
Concept of ecological pyramids was proposed by

Tansley
Odum
Charles Elton
Clements

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Environmental Science
The first global environmental protection treaty "The Montreal Protocol" was signed on September 26 in

1990
1981
1985
1987

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