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Question

Presence of Tubifex in water body indicates its

A
Purity
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B
High salt content
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C
Toxic metals
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D
Organic loading
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Solution

The correct option is C Organic loading
#Answer is option D.

#Tubifex worms mainly like nutrient-rich water, where bacterial growth is highest. Worms feed on bacteria and sludge.
#Bacterial growth takes place in water which has high organic loading. like, household organic waste, industrial organic waste, and agricultural waste.
#At this kind of places worms get food and places to hide from predators.

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