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.
"Water<span> is </span>important<span> because the human body has a drought management system that prevents dehydration and </span>water<span> is the most crucial part of that system. </span>Water<span> also helps regulate body temperature, serves as a lubricant and is a natural headache remedy (headaches can be a sign of dehydration)." -uk</span>
An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. Because autotrophs produce their own food, they are sometimes called producers.