Priciple :- "Water neither be created nor be destroyed but it can be transformed into one form to another".
Explanation:- The whole amount of water of earth or universe always remains constant, but the ratio of physical forms of water(ice(solid),liquid and gas) may varies from one place to another.Temperature is the main factor which causes the variation of distribution of water.Temperature depends of many factors like more industrialization, vehicle pollution, uneven distribution of plants topography etc.
So there is no need to save every drop of water but there is an urgent need to maintain the ratio of distribution of water on the earth or universe.
