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Environmental Science

Environmental Science
Thermal belts are usually found

On mountain tops
On valley floors
On hillsides
None of these

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Environmental Science
A human population is small, there is a greater chance of :

natural selection
mutation
gene flow
genetic drift

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

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

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Environmental Science
Eutrophication of water bodies resulting to killing of fishes is mainly due to non-availability of

Food
Essential minerals
Oxygen
Light

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Environmental Science
Example of primary pollutant

hydrocarbons
SO2
CO
NO2

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Environmental Science
Plants which grow in shade are called

Epiphytes
Sciophytes
Oxylophytes
Heliophytes

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MORE MCQ ON Environmental Science

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