character: Dr. Lisa Green
topic: Renewable Energy Sources
grade: 9
subject: Science
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character: Albert Einstein
topic: Theoretical Concepts in Energy
grade: 9
subject: Science
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character: Marie Curie
topic: Radioactive Energy and its Uses
grade: 9
subject: Science
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character: Nikola Tesla
topic: Innovations in Energy Technology
grade: 9
subject: Science
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