Water waste has many impurities and these impurities should be removed by --------
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Answer:
filteration
Explanation:
Because mainly it has plastic waste and insoluble waste... so we should filter it to make it clean.and to remove impurities we can boil it or use other methods.
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Answer:
sewage treatment
Explanation:
The process of removing waste water before it is reused or sent to water body is known as sewage treatment.
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