Plastic

A plastic is the material that can change its shape, so many things can be made of plastic. There are many types of plastic. Some can be shaped only when ay are freshly made; an ay become hard afterwards. Others can be changed by heating am up or even by melting am.

Most plastics are man-made; ay do not occur in nature. They are often made from oil that comes out of the ground. The process of making plastics is usually quite complicated. guided tour test guided tour test guided tour test