Beginning of Essay
Water is the most important substance on earth. It is the beginning of all life, and sustains life in all organisms. Most organisms are predominately made up of water and they depend on it from their day to day life. Almost every aspect of natural life traces back ....

Middle of Essay
.... things about water is the fact that it expands when it freezes unlike many other liquids. Its thermal and transparent properties protect aquatic life in freezing temperatures. All of these things combined help to sustain life and keep it constantly evolving. In the next couple of pages, we are going to go into detail of how it does this. Water consists of two hydrogen atoms that are joined to one oxygen atom by covalent bonds. These bonds are polar bonds. The partial charges on different parts of water molecules produce weak attractive forces called hydrogen bonds. The hydrogen bonds are formed between the hydrogen of one water molecule and the oxygen ....