Question

what is rain water harvesting​

Answer 1

$\huge\underline\mathfrak\color{red}Answer:-$

Rainwater harvesting (RWH) is the collection and storage of rain, rather than allowing it to run off. ... Rainwater harvesting differs from stormwater harvesting as the runoff is collected from roofs, rather than creeks, drains, roads or any other land surfaces.

Answer 2

Explanation:

Rainwater harvesting system, also called rainwater collection system or rainwater catchment system, technology that collects and stores rainwater for human use. Rainwater harvesting systems range from simple rain barrels to more elaborate structures with pumps, tanks, and purification systems.