Q9 of 76 Page 258

What is the main purpose of rainwater harvesting ?

Rain water harvesting is done so that rain water can penetrate into the ground and recharge the ground water levels which have fallen due to its excessive use.


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7

With which process are the following ancient structures associated?

Kulhs, Eris, Surangams, Kattas, Pynes

 8

Which fossil fuel is conserved :

(a) when we save on electricity?


(b) when we use bicycle for covering short distances instead of a motorbike ?

 10

What is the name of the process in which rain water falling on the earth is stopped from flowing and made to percolate into the ground ?

 11

Name the most common practice of recharging ground water.