Are CFCs the only human-made chemicals responsible for destroying the ozone layer?
No, but they are by far the biggest problem. Other destructive chemicals include halons and bromine (which are found in fire extinguishers) and nitric acid, which comes from the exhaust of high-flying, supersonic transport planes such as the Concorde. There may in fact be more “ozone eaters” out there that scientists have not yet identified.
