THE WATER CYCLE

POLLUTANTS IN THE WATER CYCLE

HOW IT WORKS ?

Water is a transport fluid which forms into several water bodies that are- lakes, oceans, streams, waterfalls etc. It supports life and is one of the most essential human needs. It is a standard liquid at ambient temperature and pressure. It can be present in the form of solid that is ice, liquid as in ocean and lakes, and gaseous sate that is steam and water vapours. There is 71% of water present on earth's surface but only 1% of it is clean and safe for human consumption. The water on earth's surface continuously moves by the process called the water cycle or the hydrological cycle. The water moves by physical processes that are evaporation, condensation, precipitation, infiltration and runoff. The water cycle involves the change of energy which causes change in atmospheric temperature. When water gets heated up due to the sunlight it turns into water vapours and starts evaporating into the atmosphere. At a certain height the water vapours gets condensed and forms clouds. The clouds then turn into water droplets and starts precipitating on the earth's surface. The water then falls in the form of rain or hail or snow and again fills the oceans. Due to photosynthesis in plants the excessive water transpires into the atmosphere and again falls on the earth's surface. This is how the whole cycle works and water gets transported into all the forms. The water cycle is also essential in supporting life and all the ecosystems on our planet which in return makes earth green and clean. So to save our future generation we must contribute in saving our water cycles. the following are the three main methods that contributes in making our water cycles dirty and unsafe for human use -

THE HYDROLOGICAL CYCLE : ALL THE PROCESSESS

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