Why is there a hole in the ozone layer?

i'm researching about the ozone layer and i want to know why other people think there is a whole in the ozone layer. What can we do to help?Why is there a hole in the ozone layer?
that's right, it's due to a chemical called chlorofluorocarbons. everyone's using it.





Any of various halocarbon compounds consisting of carbon, hydrogen, chlorine, and fluorine, once used widely as aerosol propellants and refrigerants. Chlorofluorocarbons are believed to cause depletion of the atmospheric ozone layer.





so everyone should use non-chlorofluorocarbonated items like chlorofluorocarbonated-free sprays, fridges, mosquito repellents, etc.Why is there a hole in the ozone layer?
The real answer is - nobody knows why there is a hole in the ozone layer. They do shift and change sizes, remaining mostly centered over the poles. They have been there ever since we have had the technology to know that they are there.





There have been a number of different theories about how man has created them, but none of them really come out in the wash, and it is interesting that we think we may have created them, since as far a we know, they have always been there.





For all we really know, they have always been there, and serve some purpose to keep the earth operating like it does. But nobody seems willing to explore that idea.





So the answer is, we can't do anything to help. We don't know what they are for - what if we 'help' and they fill in, and we really needed those holes for some purpose we didn't know about until they weren't there anymore?
The claim is that there are man made chemicals like floroclorocarbons (spelling?) which break down the ozone and leave a hole.
because we're selfish, fossil fuel burning idiots.
its got something to do with CFCs braking down O3.
people say there are holes in the ozone layer cause are ozone layer is diying by the minute be cause of pollution
The aerosol propellant ChloFloroCarbon or CFC's get broken down by UV light in the upper atmosphere into chlorine atoms, these chlorine atoms then act as a catalyst to break down ozone (O3). since the banning of regular use of CFC's the ozone hole has gotten progressively smaller and should dissapear altogether within 80 years.