What are CFC's?
Chlorofluorocarbons, commonly know as the CFC's is one of the major causes of the depletion of the ozone layers. These are organic compounds that contain chlorine and fluorine. They are used as propellants in aerosol sprays, asthma nebulizers and fire extinguishers. Freon, the cooling substance of refrigirators and air conditioners, are also CFC-based. The air spaces of styrofoam are filled with CFC.
How do CFC affects the ozone layer?
CFC's drift high into the stratosphere where sunlight breaks them down into chlorine atoms. Chlorine atoms then break down ozone into oxygen thus causing the depletion of th ozone layer. in 1987, ahole in the ozone layer was observed over th Antarctic and in 1989, a severe thinning of the ozone layer was noted over the Arctic.
These phenomenon of great environmental concern are taking it seriously by government of different countries around the world. These include the law for massive destruction and avoidance of using these substances. It is for us to know and to inform others to conserve and protect our mother nature.
.. ref: EnviSci by florenda santiago & company..
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