character: Dr. Emily Carter
topic: Ecologists and their role in restoration efforts for polluted rivers
grade: 9
subject: Science
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character: RiverKeeper Team
topic: Community initiatives for restoring river ecosystems
grade: 9
subject: Science
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character: Professor John Smith
topic: The science behind river pollution and ecological recovery
grade: 9
subject: Science
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character: Environmental Protection Agency (EPA)
topic: Policies for managing polluted rivers and promoting restoration
grade: 9
subject: Science
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