Ozone is produced when UV-C is absorbed by oxygen molecules. These molecules break apart due to this energy, and some of them recombine into ozone. UV-C is also absorbed by nitrogen, so at some point all the UV-C is gone and no more ozone can be directly formed with just light. Hence the "layer" has a bottom.
There are various facts about ozone hole. The main being that it is caused by CFC's.
No it is not. Ozone layer only protects us.
The thinning of ozone layer is called the ozone hole. IT is caused due to CFC's.
The thinning of ozone layer is ozone hole. It is caused by ODS.
Ozone layer is caused by natural processes. It is formed by UV.
Ozone layer is caused by UV rays. They are the reason for its creation.
The ozone layer is damaged over the poles. It is due to the low temperature.
The ozone layer is being ruined by CFC's. They react with ozone and deplete it.
We know that the ozone depletion is caused by CFC's. To prevent depletion, CFC's are banned.
Depletion means the destruction of ozone layer. It is caused by CFC's.
Ozone layer is being depleted by CFC's. They react with ozone and decompose it.
The holes in ozone are not actually holes. They are lowered concentration of ozone.