A polymer is a massive molecule, or macro-molecule, composed of many subunits. Due to their broad vary of properties, each synthetic and natural polymers play essential and ubiquitous roles in lifestyle. Polymers vary from acquainted artificial plastics such as styrene to natural biopolymers like DNA and proteins. Polymers are studied within the fields of biophysics and macro-molecular science, and polymer-science. Polyisoprene of latex rubber is example of a natural/biological polymer, polystyrene of Styrofoam is example of a synthetic-polymer.