Define rainwater harvesting.
Rainwater harvesting is the gathering and storage of rainwater that falls on roofs, parks, roadways, and other open areas. This runoff water can be kept or returned to the groundwater system.
a)Is water harvesting only for rainwater?
b)Define -Water Harvesting
b)Define -Biogas
What are the differences between rooftop rainwater harvesting and rainwater harvesting ?