character: Coral Reef Guardian
topic: How Pollution Affects Coral Reefs
grade: 4
subject: Science
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character: Coral Expert
topic: Threats to Coral Reefs
grade: 4
subject: Science
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character: Ocean Defender
topic: Protecting Marine Ecosystems
grade: 4
subject: Science
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character: Pollution Watcher
topic: Impact of Waste on Ocean Life
grade: 4
subject: Science
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