- Plastics are composed of large chains of molecules which are called polymers.
These polymers can contain various elements such as carbon, hydrogen, oxygen, nitrogen, etc. Plastics are obtained by synthetic polymers, this means that we can not find plastics in nature.
- Plastics are considered toxic and harmful because from their creation being synthetics, it is necessary to use petrochemicals that are very contaminant to the environment, and the fact that we can use plastics, mean that takes a long time to biodegrade, which represents a problem too because a lot of waste accumulates which can disturb the ecosystem.