Question

Primary treatment is the

1) physical removal of large and small particles from sewage 2) biological removal of large and small particles

form sewage

3) both (1) and (2)

4) chemical removal of large and small particles from sewage​

Answer 1

Answer:

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3)both (1) and (2)

Explanation:

Hope it will help you.

Answer 2

Explanation:

your answer is 3both (1)and(2)