"Water is important because the human body has a drought management system that prevents dehydration and water is the most crucial part of that system. Water also helps regulate body temperature, serves as a lubricant and is a natural headache remedy (headaches can be a sign of dehydration)." -uk
Water is essential to life. Water makes up more than 50% of the weight of all living things, and very few organisms can survive a long time with no water. The total amount of water found on Earth never changes but it gets transported by the water cycle.
