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Environmental Science

Environmental Science
BOD of a river water is found very high. This means water

contain many dissolved minerals
is clear
is highly polluted
contain Algae

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

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

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Environmental Science
Photosynthesis is found in

Decomposers
Producers
Consumers
Scavengers

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Environmental Science
Which tree is known as Coral tree?

Quercus
Dipterocarps
Zizypus
Erythrina

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Environmental Science
Symbiosis is shown by

E.coli
Cuscuta
Monotropa
Rafflesia

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Environmental Science
Acid deposition causes

lakes and forests to die
all the above are correct
the greenhouse effect to lessen
acid indigestion in humans

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MORE MCQ ON Environmental Science

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