Subject: enviroment
Date: Wed May 1 13:06:57 1996
Posted by: Xavier Avalos
Grade level: 7-9
School/Organization: Bristow Middle School
City: Brentwood State/Province: California
Country: U.S.A.
Area of science: Environment/Ecology
Message:
How long will it take for the Ozone to wear down?Is it only low at the north and south poles?
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