character: Ms. Johnson
topic: Solar Energy and Its Applications
grade: 11
subject: Chemistry
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character: Mr. Smith
topic: Renewable Energy Sources
grade: 11
subject: Chemistry
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character: Dr. Williams
topic: Photovoltaic Cells and Their Efficiency
grade: 11
subject: Chemistry
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character: Ms. Lee
topic: Environmental Impact of Solar Energy
grade: 11
subject: Chemistry
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