Question

write 10 lines about rain water harvesting.

Answer 1

Rainwater harvesting is a technique used for collecting, storing and using rainwater for landscape irrigation and other uses. The rainwater is collected from various hard surfaces such as rooftops and/or other manmade aboveground hard surfaces..............
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Answer 2

Following are the benefits of rainwater harvesting at individual or city-wide level:

It helps in reducing the water supply bills especially to the institutions.Rainwater recharged to the ground positively affects groundwater quality by diluting fluorides, nitrates and its salinity.It contains almost neutral pH and zero hardness which makes it more able to be used in homes, industries, institutions and other commercial establishments.It may reduce the stress of public water supply sources.Recharge of rainwater to the ground prevents sea-water immersion into the fresh water bodies in the coastal areas.It helps in controlling urban flooding if people do rainwater harvesting from rooftops.It reduces water demands of people from the municipality thus lessens energy consumption too in distributing water all through the city.