problem 1: describe the problem occurs due to excessive use of ground water.
problem 2: What do you mean by water shed management? describe the different methods of water shed management.
problem 3: Define the term Desalinization. List all the different methods for desalinization of saline water.
problem 4: Define the term rain water harvesting. describe different methods for rain water harvesting.
problem 5: prepare short note on the given:
a) Reverse osmosis
c) Cloud seeding