User:Preethi pradeepa/sandbox

WATER

Water is the most important thing in our daily life.water is also a renewable resources.Three fourth' of the earth's surface is covered with water and one fourth is covered with water .our earth is also called as "WATER PLANET".The oceans cover two -thirds of the earth's surface and that support a rich variety of plant and animal life.The ocean water is saline in nature and it is totally not fit for human consumptions.Human consumption are not only drinking and washing but also in the process of production.Water for agriculture,industries,generating electricity through reservoirs of dams are the other usage.Increasing population,rising demands for food and cash crops ,increasing urbanisation and rising standards of living.These are the some major factors of water used in different ways.

Fresh water is the most precious substance on earth.Fresh water accounts for only about 2.7 per cent.Nearly 70 per cent of this occurs as ice sheets and glaciers in some countries like Antarctica,Green land and some mountain regions.Only1 per cent of fresh water is available and fit for human use and those type of waters are found in rivers,lakes,ground water and as a water vapour in the atmosphere.

Water can neither be created nor be destroyed as well as neither be added nor subtracted.Its total volume remains constant. Its abundance only seems to vary because it is in constant motion,cycling through the oceans ,the atmospheric air,the land where we live and the major leading factor is water cycle.In the process of water cycle there are three stages.1)Evaporation                                                                                            2)Condensation 3)Precipitation.eventhough there is problems of water availability.There is scarcity of water in many regions of the world.Most of                                                                                     * AFRICA                                                                                     * WEST ASIA                                                                                     * SOUTH ASIA                                                                                     * MEXICO                                                                                     * SOME PARTS OF SOUTH AMERICA.These problems can conserve by following methods like close the tap properly,discharge waste water into the garden,water harvesting is the best method to conserve water surface run off.these types are very useful in conservering of water.