Ozone layer
What chemicals are the major causes of ozone depletion in the stratosphere?
Prentice Hall Science Explorer - chapter 4
Prentice Hall Science Explorer - chapter 4
chlorofluorocarbons (CFCs), hydrochlorofluorcarbons (HCFCs), carbon tetrachloride and methyl chloroform
Halons are the worst offenders because they are exponentially more caustic in nature than the other substances.