There are various reasons. The use of CFC's being the major.
No the ozone hole is not constant over the time
The ozone hole is not constant. Various man made chemicals vary the size of it.
The ozone hole was discovered over Antarctica.
Ozone hole is created over low temperatures. It is because ozone hole is over Antarctica.
Ozone hole was discovered by Joseph Farman. He discovered the ozone hole over Antarctica.
Antarctic ozone hole is the ozone hole over Antarctic. It is due to cold weather there.
The ozone hole is over Antarctica. It is quite big
No, there is not. The ozone hole is over the poles.
The ozone hole forms over Antarctica. It is because of low temperature.
yes, and it was the "antarctic ozone hole"ozone layer
The hole in ozone is over the south pole. Antarctica has the largest.
Ozone hole is referred as low concentration of ozone layer. It is caused over Antarctic.