What is cloroflorocarbons?

Answer 1

They are a series of chemicals, also known as CFCs that were discovered in the 1920s and, since they were not harmful to living beings. They became a problem and made a hole in the ozone layer

Answer 2

Chlorofluorocarbons (CFCs) are a group of chemicals that were once commonly used in refrigeration, air conditioning, and aerosol propellants. They are known to deplete the ozone layer, which protects the Earth from harmful ultraviolet radiation. Due to their environmental impact, the production and use of CFCs have been significantly reduced under the Montreal Protocol.