Available Answers

1. 1.

   Mention two main functions of water for living organisms.

2. 2.

   In which forms, water exists on the Earth '?

3. 3.

   Name the sources of water on the Earth.

4. 4.

   Why is water-harvesting being encouraged these days ?

5. 5.

   Draw a diagram of water cycle.

6. 6.

   Which parameter is absorbed or evolved during the change of states of water?