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How many gallons of waste-water is treated before being released into the natural water-bodies?

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in Biology – Class 12 by (271k points)
How many gallons of waste-water is treated before being released into the natural water-bodies?

(a) Millions

(b) Billions

(c) Trillions

(d) Quadrillion

This question was posed to me in homework.

Origin of the question is Microbes in Sewage Treatment topic in section Microbes in Human Welfare of Biology – Class 12

1 Answer

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Best answer
Right option is (a) Millions

Easy explanation: Millions of gallons of waste water is treated in various sewage plants where microbes play a major role in decomposing the waste. This methodology has been practised for a century, in almost all parts of the world.

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