There is no life on earth without water. Life almost certainly originated in water. From conception to birth, a child is born in a sac of water (amniotic fluid) which protects and shields the fetus from physical harm. The birth of a child is heralded by the “breaking of water” after a child is fed breast milk composed of 90% water (Nagin, 2008). Definition of Water Water in its pure form is clear, colorless, odorless and tasteless water. liquid. Matter can exist in three states: solid (ice), liquid and gas (vapor). The chemical formula of water is H20, which is interpreted as 2 atoms of hydrogen and oxygen in a ratio of 2:1. The diagram below illustrates the formula of water using symbols: (Iowa State University) Diagram showing states of water: Seavey (1998) Water in its natural form, it is found in oceans, seas, inland artificial lakes and dams, rivers, streams as well as underground . The water in these reservoirs is continually replenished thanks to the cynical precipitation system. Water Cycle Diagram: (Evans, 2009) Ocean and marine water supports a diversity of aquatic life, including fish and edible shellfish species which play an important role. in the food supply chain. Ocean and sea water are used in the production of sea salt, a product sold commercially around the world. The highest percentage of fresh water found in lakes and dams is used for agricultural purposes. It is used for livestock watering and, where possible, can be used for irrigation purposes. Some dams and lakes are built specifically for the production of hydroelectric power... middle of paper ...... for any person and contribute to the development of associated infrastructure. The ability of water to produce solutions is used for washing. The importance of water in personal hygiene cannot be overstated. Human beings should wash their bodies regularly to feel fresh and wash their hands to minimize the risk of cross infection. The uses of water on Earth continue to expand. Physiotherapists are using water to treat musculoskeletal conditions and midwives are experimenting with the benefits of water birth. These examples use the warming and cooling effects or properties of water. In some religious sects, water is used for baptism and cleansing purposes as it is considered holy. In philosophy, it is one of the four classical elements of earth, alongside earth, fire and air; this means the importance of water on earth.