Terpenes are a set of relative simple organic molecules present in all living organisms. Most aromas and flavors in a plant come from terpenes. Terpenes have a lot of power most plants share many of the same terpenes. Terpenes are made up of carbon and hydrogen and are produced by many plants and also some insects. When they are dried, they are referred to as Terpenoids. They are the principle ingredient in plant resin or essential oils. Amongst many other very important roles they play in the plant and animal kingdom, they act as chemical building blocks for more complex molecules.