What is ozone layer?

Asked by  | 3rd Sep, 2008, 11:32: PM

Expert Answer:

 Ozone layer is a gaseous layer of ozone in the upper atmosphere (stratosphere) that protects the earth from harmful ultraviolet radiation. It is about 20 to 50 kilometers in altitude.

Answered by  | 4th Sep, 2008, 09:08: AM

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