Question

What causes damage to the ozone layer?

Jenny has appealed to the local government to ban the use of aerosol room fresheners because they contain ___________, which can damage the ozone layer.

Answer 1

Chlorofluorocarbons (CFCs) can damage the ozone layer.

Answer 2

The right answer is chlorofluorocarbons (CFCs).

A good aerosol propellant must be odorless, colorless and non-flammable. CFCs, chlorofluorocarbons, have been used for many years. Unfortunately, they would have actively participated in the destruction of the ozone layer. Their use was banned in 1985 by the Montreal Protocol. Other often flammable substitutes (for example butane or propane) have been found.