Due to human activity two types of compounds have been found to be most responsible for depleting ozone layer and creating a **** into it. These two agents are :
(i) Nitric oxide (NO) : NO reacts with ozone decreasing the amount of ozone and forms NO2 which absorbs energy from sunlight and breaks up in NO.
*(ii) Chlorofluorocarbons (CFC’) :** In the stratosphere, they first undergo photochemical decomposition to give chlorine atoms
