A polymer is a type of substance or material that consists of very large molecules, called macromolecules, that are made up of many smaller units, called monomers. Polymers can have different properties depending on the type and arrangement of the monomers. Some polymers are natural, such as proteins, DNA, and cellulose, while others are synthetic, such as plastics, rubber, and nylon. Polymers are widely used in everyday life for various purposes, such as clothing, packaging, furniture, and electronics.
