Chlorofluorocarbons are compounds containing only carbon, chlorine, hydrogen, and fluorine.
Also known as CFCs, chlorofluorocarbons are greenhouse gases and ozone-depleting substances that can cause the formation of holes in the ozone layer.
Essentially, these chemicals which are not destroyed in the troposphere drift upwards to the stratosphere and then break down ozone when they are under the right atmospheric conditions.
Originally, CFCs were used for:
- air conditioning