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Environmental Science

Environmental Science
Non-biodegradable pollutants are created by

natural disasters
nature
excessive use of resources
humans

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Environmental Science
Commonly used radioactive isotopes in scientific research

32 P
14 C
125 I
all of these

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Environmental Science
Ultraviolet radiation which is not lethal but harm to the organism is

0.28-0.32
0.32-0.4
0.1 to 0.28
0.4-0.5

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Environmental Science
Succession initiated on large sand deposits or deserts is called

Psammosere
Xerosere
Hydrosere
Oxylosere

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Environmental Science
High biological oxygen demand indicates:

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

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

low temperature
high rain fall areas
frozen areas
semi-arid

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MORE MCQ ON Environmental Science

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