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Environmental Science

Environmental Science
Sinking air warms by this process:

Condensation
Compression
Expansion
Friction

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Environmental Science
CFCs are used as

All listed here
aerosol propellants
insulators
refrigerants

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Environmental Science
Total amount of living material at the various trophic levels of a food chain is depicted by pyramids of

numbers
biomass
all of these
energy

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Environmental Science
The range of normal human hearing is in the range of

50 Hz to 80 Hz
10 Hz to 80 Hz
50Hz to 15000 Hz
15000 Hz and above

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Environmental Science
Mobile combustion accounts

50-60 % of air pollution
40-50% of air pollution
10-20% of air pollution
5-10 % of air pollution

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Environmental Science
In a food chain of grassland ecosystem the top consumers are

Herbivorous
Carnivorous
Bacteria
Either carnivorous or herbivorous

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MORE MCQ ON Environmental Science

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