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Environmental Science

Environmental Science
The major pollutant from automobile exhaust is

CO
SO2
Soot
NO

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Environmental Science
In a volume of air near the earth's surface, ____ occupies 78 percent and ____ nearly 21 percent.

Oxygen, hydrogen
Hydrogen, helium
Hydrogen, oxygen
Nitrogen, oxygen
Nitrogen, water vapor

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Environmental Science
BOD stands for

Biological Oxygen Decrease
Biotic Oxygen Demand
Biological Oxygen Demand
None of these

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Environmental Science
Radiations are harmful as it

causes skin cancer
causes anemia
alters body tissues
is unstable

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Environmental Science
Which of the following is an extinct species?

Ostrich
Tiger
Lion
Dodo

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Environmental Science
The organic matter produced by the photosynthetic activity of green plants is called as

light energy
primary productivity
cellular process
energy flow

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MORE MCQ ON Environmental Science

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