Appu lives in an area where there is heavy rainfall. To prevent floodi – InterviewSolution

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1.	Appu lives in an area where there is heavy rainfall. To prevent flooding of his village, the village has a parallel drainage system that collects rain water along with another drainage system that collects sewage. What is the drainage system that collects rainwater called?
Answer» Appu lives in an area where there is heavy rainfall. To prevent flooding of his village, the village has a parallel drainage system that collects rain water along with another drainage system that collects sewage. What is the drainage system that collects rainwater called?

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