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Environmental Science

Environmental Science
Which of the following ecological pyramid is always upright?

Pyramid of biomass
Pyramid of number
Pyramid of energy
None of these

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Environmental Science
Freshwater protozoans react to a/an __________ environment by removing water through _______

hypotonic, a contractile vacuole
hypertonic, a contractile vacuole
isotonic, a contractile vacuole
hypotonic, turgor pressure

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Environmental Science
The concept of ecological pyramid was first proposed by

Juday
G. Tansley
E.P. Odum
Charles Elton

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Environmental Science
Aquatic life is damaged by

All of these
Thermal pollution
Sound pollution
Air Pollution

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Environmental Science
The slow rate of decomposition of fallen logs in nature is due to their

low cellulose content
low moisture content
poor nitrogen content
anaerobic environment around them

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Environmental Science
A small particle of soil blown by dust is known as

saltation
suspension
landslide
surface creep

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