Water is the basic necessity for the functioning of all life forms that exist on earth. It is safe to say that water is the reason behind earth being the only planet to support life. This universal solvent is one of the major resources we have on this planet. It is impossible for life to function without water.Water is vital to our health. It plays a key role in many of our body's functions, including bringing nutrients to cells, getting rid of wastes, protecting joints and organs, and maintaining body temperature.Water is the most common liquid found on our planet. It is vital for the survival of every living being. Around 71.4% of Earth is covered with water. However, while most part of our planet is covered with water, fresh water that can actually be used for drinking, cooking and other activities is quite less.