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CBSE Class 7 Answered

Manu's mother tells him not to throw the left over paints, motor oil and medicines down the drain. Why?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer
Throwing paints, motor oil and medicines down the drain may kill microbes that help purify water. So, it should be avoided.
Answered by | 04 Jun, 2014, 03:23: PM
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