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Environmental Science

Environmental Science
Which of the following gases has role an important in maintaining atmospheric temperature?

Argon
Carbon dioxide
Oxygen
Nitrogen

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Environmental Science
Enrichment of water body by nutrients like phosphorus and nitrogen is called _____________

Stratification
Climax Vegetation
Eutrophication
Succession

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Environmental Science
Chemical reactions triggered by ________ transforms the organic material into hydrocarbons.

hydroelectric
decomposition
elevated temperatures
solar energy

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Environmental Science
Symbiosis is shown by

Cuscuta
Rafflesia
E.coli
Monotropa

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Environmental Science
Which phytoplankton exists at the size of 60 micro metre?

Nanoplankton
Net plankton
Ultraplankton
Picoplankton

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Environmental Science
A high Biological Oxygen Demand (BOD) indicates that:

Low level of microbial pollution
High level of microbial pollution
absence of microbial action
water is pure

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