Answers

2015-07-22T21:05:01+05:30
The rooftop rainwater harvesting is use by rajasthan state because they not have water for some months only .

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2015-07-22T22:48:25+05:30
This technique of water harvesting is mainly used in states like rajasthan.
Rajasthan lies in the lee ward side of the mountain, as a result it gets less rain. And therefore, it is mainly dry there. So, in states like rajasthan
rooftop harvesting is done to reduce the suffer due to lack of water.

hope it helpss.. :)
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