Question

Give a detailed account of the occurrence of water on earth.

Answer 1

1. About two-thirds of the total earth’s surface is covered with water, but unfortunately, only a small percentage (2 to 3 per cent) is suitable for human use.
2. The other 99.7 per cent available are found in oceans, sea, groundwater, floating in the atmosphere and in icecaps.
3. This water is not safe and is unsuitable for human consumption, as it consists of excess salt, toxins and other impurities, which can lead to illness and other health disorders.
4. Rivers, ponds, lakes and groundwater are the different sources of water, which can be used for drinking, cooking and other human uses only after proper treatment like boiling, filtering, etc.