character: Ozone Layer
topic: Importance of Ozone in Protecting Earth from UV Radiation
grade: 11
subject: Chemistry
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character: Ultraviolet Radiation
topic: Effects of UV Radiation on Human Health
grade: 11
subject: Chemistry
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character: CFCs (Chlorofluorocarbons)
topic: Impact of CFCs on Ozone Depletion
grade: 11
subject: Chemistry
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character: Greenhouse Gases
topic: Difference Between Greenhouse Gases and Ozone Layer
grade: 11
subject: Chemistry
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