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Primary
Other

Back From the Brink: Lessons Learned From Saving the Ozone Layer [Pdf]

For Students 9th - 10th
Good site for material on the people involved in inventing CFCs and those who discovered its effects on the ozone layer.
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Website
Columbia University

Nasa: Sedac: Ozone Depletion and Global Environmental Change

For Students 9th - 10th
[Free Registration/Login Required] Mainly a thematic unit to give teachers a background in CFCs and ozone depletion, this site has a wealth of information for student research.
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Handout
Other

Imperial College: Cf Cs

For Students 9th - 10th
This site from the Imperial College of Science provides a chemistry based discussion of CFCs with formulas and Molecular structures.
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Handout
Other

Especial Gas Inc.: Chlorofluorocarbons Cfc's

For Students 9th - 10th
Especial Gas Inc. provides a good description of what CFCs are and the dates that countries started to ban them. Explains where the name freon came from.