character: Marine Ecosystems
topic: Overview of Marine Biodiversity and Its Importance
subject: Geography
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character: Coral Reefs
topic: Significance of Biodiversity in Coral Reef Ecosystems
subject: Geography
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character: Pelagic Zones
topic: Biodiversity in Open Ocean Environments
subject: Geography
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character: Marine Conservation
topic: Strategies for Protecting Marine Biodiversity
subject: Geography
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