NEWTON: Preserving Ozone Layer
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Name: Rajesh
Status: student
Grade: 12+
Country: Trinidad and Tobago
Date: Winter 2012-2013

What can be done to preserve the ozone layer?

Hi Rajesh,

Thanks for the question. The best way to preserve the ozone layer would be decrease the amount of chlorofluorocarbons (CFC's) that are emitted into the atmosphere each year. The chlorofluorocarbons break down (due to ultraviolet light) into chlorine atoms. These chlorine atoms destroy ozone. It has been estimated that one chlorine atom can cause the breakdown of several thousand ozone molecules. Scientists have developed alternatives to CFC's that are hydrocarbons or hydrochlorofluorocarbons (HCFC's); these substitutes break down in the lower atmosphere and do not release chlorine atoms into the upper atmosphere where ozone is located.

I hope this helps. Please let me know if you have more questions. Thanks Jeff Grell

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