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The ozone is a thin layer in the stratosphere. It's job/ purpose is to reflect and control the heat and radiation that is given off by the sun. It takes 3 oxygen molecules to create a bond and be a part of the ozone layer in order to help.
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CFC's were created in 1928. They were used in many ways such as deodorant, air cooling, fire extinguishers, but mostly HAIRSPRAY.
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Scientists discovered that CFC's were dangerous when they started to experiment with them then later realized that they started to deplete the ozone layer. This was a problem because the ozone protects us from ultraviolet radiation that is very deadly towards life on Earth.
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Most of the world banned it in 1978 but it started to rise back up in 1981. The reason for this is because, most people didn't believe it without the evidence shown and kept purchasing those products.
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Scientists have figured out proof and the british antarctic team also discovered that solar radiation is causing ice caps to melt more jurassticaly. Obviously that can create serious problems in climate change, overflooding, river path flow, etc.
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The UNEP (United Nations Environment Programme) got 47 governments to see how CFC's effected the ozone layer and why it was important. But for other people they still decided to not see on how exactly they were in relation towards ozone depletion
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Scientists were studying and figured out that there are more gasses that can deplete the ozone but CFC's are the worst. Some examples are HCFC's and Methyl Bromide. It was decided that HCFC's will be phased out by 2030 and Methyl Bromide will be ruled out by 1995. While CFC's would be ruled out by 96'.
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Some countries had to deal with internal problems at this time and couldn't entirely ban depleting gasses at the due time as supposed to. The UNEP decided to rule out CFC's entirely by 1996 and Methyl Bromide by 2010.
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Industrialized based countries decided to get rid of methyl bromide by 2005. While developing countries that were affected from the depletion and ice melts shall ban products as so by 2015
