character: Professor Green
topic: Renewable Energy Sources
grade: 11
subject: Chemistry
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character: Professor Brown
topic: Fossil Fuels vs. Renewable Energy
grade: 11
subject: Chemistry
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character: Professor Black
topic: Chemical Reactions in Solar Energy Production
grade: 11
subject: Chemistry
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character: Professor White
topic: Biomass as a Renewable Resource
grade: 11
subject: Chemistry
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