because i also do not now
tum log pagal
because i also do not now
who invented rainwater harvesting
by rainwater harvesting
There are two types or rainwater haversting. Rooftop rainwater harvesting and drain harvesting. In rooftop rainwater harvesting, we use the water collected on rooftops instead of letting it go down the drain. We can also use water collected in dugout ponds, underground vessels etc. Drain harvesting involves letting water collected in roadside drains go straight to the ground. But this water has to be treated before use as it may contain bird faeces, germs and other pollutants.
Aims and objectives of water harvesting
Stephen K. Booth has written: 'Rainwater harvesting' -- subject(s): Water harvesting, Rainwater
drain and rooftop
picture of rain water harvesting model
Uttarakhand
Aby Emmanuel
haryana