Causes of ozohne layer depletion on a global scale?

pls give me dis ans. asap thanxxxxxxxxxxxCauses of ozohne layer depletion on a global scale?
1. use of CFC gas.


2. Jet plans flying in upper troposphere


3. over production of co2 gas which decreases the formation rate of oxegen and ultimately it restrics formation of o3(ozone)Causes of ozohne layer depletion on a global scale?
Chlorofluorocarbons (CFCs), which were used in things such as refrigerants and cleaning supplies, made their way into the stratosphere. The ultraviolet light then breaks up the CFC and then the newly separated Chlorine atom readily reacts with the ozone molecule (O_3), taking away two of its oxygen atoms to form ClO_2 and leaving the single oxygen atom. Then that oxygen atom binds itself to another O_3 molecule making 2O_2. O_2 is just oxygen gas, the one we use for breathing. As result, CFCs are causing ozone molecules to end up as oxygen gas and ClO_2's, thus depleting the ozone layer.
We Westerners are kicking the hell outta the ozone layer by means of transportation, manufacturing, home heating etc. More CFC's than the rest of the world combined.
ALIENS!!! That's right they caused back in the 1970's GLOBAL COOLING!!! The Polar Ice Cap was Steadily overtaking Cananda and was headed Straight for Miami Florida. But Thanks to the inventor of the interenet ';Al Gore'; we Fought'em off and we can do it again if we can just enlist his help once again!!!
To the asker: please learn how to use a search engine to get information do your homework, don't just ask other people.





To everyone else: there are several causes to depletion of the ozone layer. The two major ones are solar ultraviolet (UV) radiation and chlorofluorocarbons (CFCs). In a static environment, the cycle is consistent. However, the introduction of CFCs disrupts that cycle. Additionally, increases in UV radiation -- caused by a weakening in the Earth's magnetic fields -- reduce the amount of ozone.
I'm going out on a limb here, and say that the ozone layer gets holes in it because of the interaction of the solar wind and the earth's magnetic field. Although CFC's have been blamed for the hole at the south pole, I read about that hole in the 1950's before CFC's were invented.