Water, Earth, Air, Fire.
Usually your element is the one your most connected to. Some people have more than one element, others are connected to all of the elements. In my option I believe that Earth and Water are more connected that all the others, such as Air and Fire, they can't live with out each other. Air gives the Fire life and flame, just like the Water gives the Earth a healthy green color. Everything is connected together. There would be no life without the elements and there would be no "us".