character: Ultraviolet Radiation
topic: Effects of UV Radiation on Human Health
grade: 11
subject: Chemistry
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character: Skin Cells
topic: Damage from UV Radiation
grade: 11
subject: Chemistry
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character: Ozone Layer
topic: Protection Against UV Radiation
grade: 11
subject: Chemistry
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character: Photosynthesis
topic: Effects of UV Radiation on the Environment
grade: 11
subject: Chemistry
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