Dried sewage after treatment is used as A. Fertilizer B. Building material C. Chemical for lowering B.O.D. D. Base material for paints

The correct answer is: A. Fertilizer.

Dried sewage after treatment is a good source of nutrients, such as nitrogen and phosphorus, which can be used to fertilize crops. It is also a good source of organic matter, which can help to improve soil structure and drainage.

Option B

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