This is a iron oxide molecule, which consists of iron and oxygen, with the formula Fe2O3. They are vital to many processes, both geological and biological. They are important for pigment, catalysts, and inexpensive paints, concrete, and coating. They can also be used for plants, increasing growth, development and advancement of the plant. This is also know as rust and is found in many different things, such as different foods, oxygen-rich places, and can be in the air when broken up into dust. In conclusion, they are a important source to the environment and can be used various ways to help you the environment, helping plants and a way of coloring for items.