The ozone layer is recovering. It is because of Montreal Protocol's ban on CFC's.
The hole in the ozone layer was a big one when CFC's were discovered. However it has shrunk very small now.
The circle is quite big. It is the size of Australia.
See "What is the condition of the ozone layer now?"See "How large is the ozone hole now?"See "What is the condition of the ozone layer?"
Ozone layer was depleting earlier. Now it is being aided.
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Ozone layer is a pool of ozone molecules presnt in the atmosphere. Earth is till now the only known planet to have the ozone layer.
Ozone used to be without hole earlier. It has developed a hole now.
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The ozone hole is in the south pole. It is over Antarctica.
The scientific progress first depleted the ozone. It is now replenishing it.
When the sun begins to cool, no ozone will be there. But this is not expected now.
Ozone over the poles has been destroyed. It is due to the fact that ozone is susceptible to low weather.