The pH of a river water sample as measured by pH paper is found to be What does it tell us about water?

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 ?

Name the most common practice of recharging ground water.

Name the person who is most remembered for the protection of Khejri trees in Rajasthan.

State whether the following statement is true or false :

Chipko Andolan was associated with the conservation of wild animals such as tigers and lions.