4. There is only 2% of fresh water available on our Earth

7. A river is a natural waterway, which moves water across the landscape from higher to lower elevations, and is an important component of water. Out of 100% of water there is only 0.0001% of river.

8. A lake is a body of water or other liquid of considerable size contained on a body of land. There are only 0.009% of lakes.

9. A glacier is a slow moving river of snow and ice. There are only 2% of glaciers.

10. Water below the earth's surface is known as ground water. Ground water left is 0.68%.

11. Water that has evaporated into the air is called water vapour. Water vapour in air is 0.0019%.

12. Ocean is the largest water body on Earth. It occupies 97.3%of water.