character: Coral Reefs: The Underwater Cities
topic: Coral Reef Ecosystem
grade: 9
subject: Science
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character: Biodiversity in Coral Reefs
topic: Ecosystem Relationships
grade: 9
subject: Science
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character: Threats to Coral Reefs
topic: Human Impact and Conservation
grade: 9
subject: Science
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character: The Role of Coral Reefs in Marine Biodiversity
topic: Food Chains and Interactions
grade: 9
subject: Science
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