character: Brianna
topic: Environmental Chemistry
grade: 11
subject: Chemistry
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character: Ethan
topic: Air Quality and Catalysts
grade: 11
subject: Chemistry
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character: Sophia
topic: Effects of Catalysts on Pollution
grade: 11
subject: Chemistry
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character: Liam
topic: Catalytic Converters and Air Quality
grade: 11
subject: Chemistry
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