Explanation

$CFC_{s}$(Chlorofluorocarbons) are mainly responsible for ozone layer depletion. $CFC_{s}$ are used as cooling materials in refrigerators and air conditioners, propel aerosol sprays, etc. UV ray breaks $CFC$molecules and release chlorine molecules, which reduce the ozone content in the atmosphere. One chlorine free radical is sufficient to destroy a lac of ozone molecules.