WATER A NATURAL RESOURCES
Nearly three fourths of Earth's surface is covered with water water is found in ponds rivers lakes and oceans under the ground it is present in empty spaces between rocks large quantities of water like frozen in glaciers and polar ice caps what is also present in air in the form of water vapour water is essential for life a person can live without food for several weeks but without water he cannot leave for more than a few days all plants and animals have large amount of water in their bodies several life processes in humans and animals such as digestion of food absorption of nutrients by the body the body distribution of nutrients to various parts of the body or getting rid of body weighs need water about two third of human body consists of water we take in water through food and drink and lose it in the form of urine sweat or exhaled air water helps us to control our body temperature in hot weather we drink a lot of water this maintains our body temperature within rea...