Water comprises up to 60% of the human body. The human body can live up to a few weeks without water, depending on ambient temperatures and the amount of strenuous labor the person is doing.
Water and the body
The heart and brain are composed of 73% water, and the lungs are about 83% water. The skin of homo sapiens contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.
Uses for water
- To make food soggier
- To make drinks less thick
Water and color
Water is generally clear and sometimes has specks of minerals, particularly when using tap water, or other unfiltered water.