Home Preparation for National Talent Search Examination (NTSE)/ Olympiad
Chapter : 2. Water Resources
Introduction About Water Resources
All living beings require water for their existence and survival. Infact without water there would be no life on the earth. The utility of water is immense : (A) It is required for domestic purposes like cooking, drinking and washing etc. (B) It is used for agriculture, pastoral industry and manufacturing industries. (C) Water is also used to harness hydro-electric power. About three-fourth of the earth’s surface is covered with water, that means there is no shortage of water. Inspite of all this most of the countries of the world are facing water crisis. This is because only a small proportion of water accounts for fresh water that can be put to use. The fresh water is mainly obtained from surface run off and ground water. The four main stages of water cycle are - 1. Evaporation 2. Transpiration 3. Condensation 4. Precipitation