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Environmental Science

Environmental Science
The thickness of ozone layer is measured in

Mm
Nm
Hg
Du

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Environmental Science
Industrial melanism is an example of

darkening of skin due to industries
protective resemblance with the surrounding
drug resistance
defensive adaptation of skin against UV radiations

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Environmental Science
__________ is derived recently from living organisms and their metabolic products.

Gobar gas
Biofuel
Biomass
Fossil fuel

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Environmental Science
The gas that shows the most variation from place to place and from time to time in the lower atmosphere:

Carbon dioxide (CO2)
Water vapour (H2O)
Argon (Ar)
Ozone (O3)
Methane (CH4)

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Environmental Science
In an aquatic ecosystem, the depth to which light penetrates is called

nonphotic
photic
euphotic
aphotic

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Environmental Science
The most important reason for decrease in biodiversity is

Habitat destruction
Introduction of exotic species
Habitat pollution
Over-exploitation

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MORE MCQ ON Environmental Science

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