No, you may not be able to rent ozone generators. Beacause scientists have found that generation should be done naturally.
Yes, it is possible for the ozone layer to recover from global warming. This can be done by stopping the emission of greenhouse gases.
It is our hands. If we want to let it recover soon, it will recover soon.
America is trying to recover ozone hole. CFC's have been banned there.
The ozone problem start with the use of CFC's. They react with ozone.
Ozone layer forms in summer. therefore it initiates its recovery at that time.
The ozone hole that was formed was pretty large. It would take time for it to recover completely.
See "What can we do to protect the ozone layer?" in the "Related questions" section below.
The ozone layer did start to damage early. It was when the CFC's came into act.
The ozone layer does not start anywhere. It is a complete layer spread all over.
The ozone depletion started because of the CFC's. They react with ozone to deplete it.
The ozone problem start with the use of CFC's. They react with ozone.
If CFC's cannot be used the ozone level will grow again in the next 60 - 120 years