1. The hole was first discovered in 1956, before CFC's came into existence.
The scientist who first discovered the "hole" was Dr. Gordon Dobson, he concluded that it was a natural phenomenon that appeared annually near the end of winter, and the hole vanished suddenly with the onset of spring
2. The "hole" is not a hole.
The ozone "hole" is actually a thinning of the ozone in the ayer. The lowest ozone concentration ever recorded in the "hole" was 30% of the normal level.
3. Worldwide ozone layers are actually increasing.
Average ozone levels are higher right now than they were in 1962, even though CFC use reached a maximum in 1974.
4. The worst-case ozone depletion scenarios of the environmentalists due to changes in the weather, solar activity, and latitude.
The (global disaster" that the environmentalist predicted was a decrease in average ozone levels by less then 10% in the next 100 years
CFC's are causing damage to ozone layer. They react with ozone to deplete it.
The ozone present in the stratospheric region of atmosphere filters our cancer causing rays from the sun. This ozone is present in the form of ozone layer.
See "What is causing the depletion of the ozone layer?"
The main factors affecting the ozone layer are the release of ozone-depleting substances like chlorofluorocarbons (CFCs) and halons into the atmosphere. These substances break down ozone molecules, causing thinning of the ozone layer. Other factors such as climate change and pollution can also impact the ozone layer indirectly.
CFC's cause hole in ozone. They react with ozone and deplete it.
CFC's are causing damage to ozone layer. They react with ozone to deplete it.
CFC's are causing loss of ozone layer. They react with ozone to deplete it.
See "What is causing the depletion of the ozone layer?"
See "What is causing the depletion of the ozone layer?"
See "What is causing the depletion of the ozone layer?"
See "What is causing the depletion of the ozone layer?"
CFC's are causing its thinning. They react with ozone to deplete it.
CFC's cause ozone destruction. They react with ozone to deplete it.
The ozone present in the stratospheric region of atmosphere filters our cancer causing rays from the sun. This ozone is present in the form of ozone layer.
See "What is causing the depletion of the ozone layer?"
See "What is causing the depletion of the ozone layer?"
Yes, scientists know what is causing the ozone layer to disappear. It is the continues use of ozone depleting substances.