Useful Water

Water is one of the commonest of all substances, and without it life would be impossible. We can live for quite some time without food, but without water we will surely die. contain of water Approximately, 70% of the earth's surface is covered with water. More than half of the human body consists of water. Water also forms a large part of the food we eat, especially vegetables and fruits. 

 In drier parts of the world where there is little rainfall, water is channeled from rivers or lakes and used to grow fruit and vegetables which provide food for mankind. In many parts of these arid regions, cultivation is not possible at all because there is no water. 

Read more at :

http://www.waterwise.org.uk/pages/fun-facts.html.

http://www.allaboutwater.org/water-facts.html.