Why do humans and animals need water?
Humans and animals need water for survival. Water is also essential for regulation of temperature and also to help in processing of the food that we take. Read more details at http://science.howstuffworks.com/environmental/earth/geophysics/missing-gravity.htm.
humans and animals need water to process their metabolic activities hence without it they wont be able to process their food and die.Also they need to keep their internal body wet and body temp. low.
humans and animals need water to live.If there were no water in our world.human and animals will not be living.And not only human and animals even plants and all the living thing need water to live.
To live.Your organs and cells need water to work correctly.
Water also plays an important part in the transportation of nutrients. Plasma in the blood has 92% water.
Our bodies are (I don't remember) but they are a LARGE percentage of water. And if the water supply goes lower, than you need to drink water to re-supply it. that is also called Hydration or Dehydration.
The is 90% water in blood