Takeaway: The concept of 'polymers' -- encompasses a greater set of materials than that of merely plastics. Muscles, amino acids, polypeptides, sugar, starch,

Takeaway: The concept of 'polymers' -- encompasses a greater set of materials than that of merely plastics. Muscles, amino acids, polypeptides, sugar, starch, cellulose, polyethylene, geopolymers, aluminum silicates (which most rock and clay is made of) are just a few of the non-plastic type of polymers that are out there... A polymer is basically any substance made up of repeating units.