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Question

The major source of BOD in the river Ganga is 


A
Leaf litter
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B
Fishes
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C
Human waste
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D
Aquatic plants
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Solution

The correct option is C Human waste
The Ganges river basin is one of the most fertile and densely populated regions in the world that covers an area of 1,80,000 $$km^2$$. The river flows through 29 cities with population over 100,000; 23 cities with population between 50,000 and 100,000, and about 48 towns. 
A large proportion of the waste in the Ganges is from this population through domestic usage like bathing, laundry and public defecation. An analysis of the Ganges water in 2006 showed significant associations between waterborne or enteric disease due to the use of the river for bathing, laundry, washing, eating, cleaning utensils, and brushing teeth.

Biology

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