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Environmental Science

Environmental Science
Green plants are absent in deep sea. Why?

Low temperature
Great depth
Light is absent
High pressure

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Environmental Science
High biological oxygen demand indicates:

intense level of microbial pollution
absence of microbial pollution
all of these
moderate microbial pollution

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Environmental Science
"Earth provides enough to satisfy every man's need, but not for every man's greed" words by

Gandhiji
None
Nehru
Tagore

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Environmental Science
In the Northern Hemisphere, this day has the fewest hours of daylight:

Autumnal equinox
Winter solstice
Vernal equinox
Summer solstice

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Environmental Science
Thorn-forests are found in the _______ regions.

frozen areas
high rain fall areas
semi-arid
low temperature

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

Nitrogen fixing bacteria
Nitrifying bacteria
Nitrate fertilizers
Denitrifying bacteria

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MORE MCQ ON Environmental Science

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