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Environmental Science

Environmental Science
Which of the following zones in a lake suffers from lack of light and therefore limited photosynthesis is able to take place?

Euphotic
Pelagic
Littoral
Profundal

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Environmental Science
Bio gas generation is mainly based on the principle of

Purification
Sedimentation
Fermentation
Biodegradation

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Environmental Science
The supersonic jets cause pollution by the thinning of

O3 layer
O2 layer
CO2 layer
SO2 layer

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Environmental Science
The green house gases, otherwise called radioactively active gases includes

All of these
CH4
N2O
Carbon dioxide

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Environmental Science
BOD of a river water is found very high. This means water

is highly polluted
contain many dissolved minerals
contain Algae
is clear

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Environmental Science
Condensation nuclei may be:

Particles of dust
Nitric acid particles
Salt from the ocean
Smoke from forest fires
All of these

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