Question

describe briefly how water harvesting is resorted to in some parts of Rajasthan

Answer 1

rainwater harvesting is the accumulation and deposition of rainwater for reuse on-site, rather .... In China and Brazil rooftop rainwater harvesting is being practiced for providing drinking water, domestic water, water for livestock, ... There are many ancient water harvesting systems in Rajasthan, which have now been revived.

Answer 2

water harvesting is resorted to in some parts of Rajasthan because there is no source of water except rain water so people of some parts of Rajasthan are required to do water harvesting. because rain water can be reuse.
hope it will be helpful