Question

Note on Rain water harvesting.

Answer 1

Rainwater harvesting is a method used for collecting, storing and using rainwater for various purposes, for example, for landscape irrigation. This technique is used to collect rainwater from different hard surfaces like rooftops and other manmade hard surfaces above the ground.

Answer 2

Rain water harvesting is the method of utilizing rain water. It helps farmer to irrigate their field.
It also saves rain water from being wasted.