character: Dr. Wang Wei
topic: Renewable Energy Technologies and Biofuel Production
grade: 11
subject: Science
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character: Dr. Maria Lopez
topic: Advances in Solar Power Systems
grade: 11
subject: Science
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character: Mr. James Smith
topic: The Future of Wind Energy and Its Applications
grade: 11
subject: Science
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character: Dr. Sarah Johnson
topic: Innovations in Hydropower and Sustainable Practices
grade: 11
subject: Science
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