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Ultraviolet RaysAdded on:12/7/2007 6:06:02 PM
In Glossary, By: nick , Viewed: 1 times
Rated by 1 users
Radiation from the sun that can be useful or potentially harmful. UV rays from one part of the spectrum (UV-A) enhance plant life. UV rays from other parts of the spectrum (UV-B) can cause skin cancer or other tissue damage. The ozone layer in the atmosphere partly shields us from ultraviolet rays reaching the earth's surface.
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