The effect of CFCs (chlorofluorocarbons) is to destroy the ozone layer. The cause of CFCs is us, as CFCs are a man-made gas. (Luckily the world agreed to stop making them, and the ozone layer is slowly rebuilding itself.)
I doubt if wikianswers would be willing to store that information on this page as there are many millions of them made and are still being made constantly. I suggest that you enquire with the US patent office to get this information.
Greenhouse gases, specifically: Carbon dioxide from burning fossil fuels Methane from cattle CFCs from refrigerants are contributing to the enhanced greenhouse effect that is making the world, as well as the US warmer.
In general, no. Cars used to use CFCs as the refrigerant fluid in the air conditioner. Some of it would be released if the air conditioner had a leak. In the US, cars manufactured after 1993 have air conditioners which do not use CFCs.
Of course. The denomination is still being made, although not nearly in the same quantities as other bills. Smaller banks may not stock them so you should check with one of the major banks in your area.