Plastics in general are made of a lot of materials, a few of these materials are, coal, cellulose, salts, and these materials are polymerized, this is why many plastics are also called polymers. The main reason why plastic is so bad for the environment is because of the long time it takes to decompose, usually hundreds of years, and since we produce so many plastics, we are pilling up this amount and they are not being decomposed. Besides this reason, plastics also release toxic substances into the soil and the air