character: Wheeler
topic: Pollution Reduction Strategies
grade: 4
subject: Social Studies
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character: Community Activist
topic: Grassroots Efforts in Pollution Control
grade: 4
subject: Social Studies
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character: Environmental Scientist
topic: Impact of Pollution on Ecosystems
grade: 4
subject: Social Studies
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character: Government Official
topic: Policies for Reducing Air and Water Pollution
grade: 4
subject: Social Studies
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