Water, the common name applied to the liquid state of the hydrogen-oxygen compound H2O, is an odorless, tasteless liquid. It consists of millions of tiny particles called molecules. Each molecule consists of even smaller particles called atoms. Water molecules consist of atoms of hydrogen and oxygen. Hydrogen and oxygen by themselves are gases. However, when two atoms of hydrogen combine with one atom of oxygen, they form the chemical compound H2O, water. Under …showed first 75 words of 680 total…

…showed last 75 words of 680 total…have to take in nutrients. Watery solutions help dissolve nutrients and carry them to all parts of an organism. Through chemical reactions, the organism turns nutrients into energy and materials it needs to grow and repair itself. These chemical reactions can take place only in a watery solution. The organism also needs water to carry away waste products. Thus, as a whole, water has been vital to the development and survival of all living organisms