The ozone layer continues to be further destroyed every year.
Today the ozone layer is thinning.
This chart illustrates the function of ozone layer.
The destruction of the ozone layer affects the environment.
Without the ozone layer, we would be in danger.
The destruction of the ozone layer presents a danger to everyone worldwide.
Scientists have been inquiring into the causes of the disruption of the ozone layer.
Balloons are cheaper than rockets and they rise slowly, so a more detailed examination of the ozone layer will be possible.
This debate about the future of the ozone layer has been mostly about profits and politics.
The greenhouse effect and the disruption of the ozone layers are grave [serious, weighty] issues for the future of mankind.
The sudden increase of ultraviolet rays made the researchers believe in the existence of ozone holes.