There is no way of knowing. We did not discover the recurring ozone hole until the late 1900s.
It covered the entire Earth, twice a year. Just like today. It may have been thicker at times...
The hole in ozone is not actually a hole. It is just the thinning of ozone layer.
The ozone hole is over Antarctica. It is quite big.
Ozone hole is very large. It almost covers the complete Antarctica.
The hole in ozone layer is pretty big. It has been shrinking however.
The hole in the ozone layer was a big one when CFC's were discovered. However it has shrunk very small now.
Hole in the ozone layer is called ozone hole. Ozone layer has many holes in it. However it has a considerable major hole in it above Antartica continent. It is formed due to CFC gas. Beacuse of the hole there is an increase in the temperature of earth.
Over the polar regions.
If the ozone hole is big, the light will burn us. The light here is UV.
The ozone hole is quite big. It is as big as Australia.
The hole in ozone layer is pretty big. It has been shrinking however.
The ozone hole is quite big. It is as big as Australia.
The ozone hole is actually the low concentration of ozone. It is pretty big over Antarctica.
It is hard to fix the hole in the ozone layer. It is because ozone hole is very big in size.
The big hole(whole) in the ozone layer is over poles. The poles carry these holes.
there is a big hole
The hole in the ozone layer was a big one when CFC's were discovered. However it has shrunk very small now.
We have to be cautious not to have a big ozone hole. It is because it will make UV radiation enter the earth.
The hole in the ozone layer varies in size during the year. In 2012, the largest extent of the ozone hole was 8.2 million square miles. This is roughly the size of North America.
Hole in the ozone layer is called ozone hole. Ozone layer has many holes in it. However it has a considerable major hole in it above Antartica continent. It is formed due to CFC gas. Beacuse of the hole there is an increase in the temperature of earth.
Over the polar regions.