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  • A higher biochemical oxygen demand in a particular segment of a river indicates that Option: 1 the segment is free from pollution </div

A higher biochemical oxygen demand in a particular segment of a river indicates that 

Option: 1

the segment is free from pollution 


Option: 2

the segment is highly polluted 


Option: 3

aquatic life has started flourishing 


Option: 4

the river has high number of aquatic animals 


Answers (1)

best_answer

 

 

As we have already discussed in Water Pollution & Its Causes : Domestic Sewage & Algal Bloom -

The  the amount of organic matter in sewage water by measuring Biochemical Oxygen Demand (BOD) which indicated that the river is highly polluted. 

Hence, the correct option is (b).

 

 

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manish

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