Those who know about iron know that it is one of the most important elements in the universe. It is also one of the most widely used metals. In fact, iron makes up 95% of the world's metal production. Iron is one of the most important elements in the human body. It is a vital component in the production of red blood cells, as well as other hormones. It is also needed in the synthesis of enzymes. It is also important to plant life. It helps in the transportation and storage of oxygen. In addition to these, it helps in the production of chlorophyll, a pigment that helps plants absorb light.