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How do CFCs Affect the Ozone Layer?

What is the Ozone layer?

The ozone layer is a deep layer in the stratosphere, encircling the Earth, that has large amounts of ozone in it. The layer shields the entire Earth from much of the harmful ultraviolet radiation that comes from the sun.

Where do they come from?

Most CfCs come from spray cans in common house hold item such as airfreshners, whipped cream, shaving cream, and spray paint.

The most abundant CFCs emitted into the troposphere are CFC 11 and CFC12. These CFCs are not soluble in water, so disposition does not remove them from the air.

Chlorine released from the breakdown of CFC-11 and other CFCs remains in the stratosphere for several years, where it destroys many thousands of molecules of ozone.

Because CFCs are so long-lived in the lower atmosphere, there is ample time and opportunity for them to become well mixed and eventually to reach the stratosphere.

The abundance of CFC-11 decreases as the gas reaches higher altitudes where it is broke down by high energy solar ultraviolet radiation.

This topic interested me because I am always wondering about how preserve out planet. I also am very interested in how to help prevent cancers.

I think everyone should know more about how to save the Ozone because when we create holes in the ozone we are putting our own lives at risk. With holes in the Ozone more of the sun's harmful ultraviolet rays shine down on us. These rays can damage our skin and can give us skin cancer. To prevent this from happening we need to save the Ozone layer.

Thank You!

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