character: Marine Biologist
topic: Role in Ecosystem Health
grade: 10
subject: Geography
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character: Coral Reefs
topic: Importance for Marine Biodiversity
grade: 10
subject: Geography
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character: Ocean Acidification
topic: Impact on Marine Life
grade: 10
subject: Geography
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character: Fish Populations
topic: Indicator Species for Ecosystem Health
grade: 10
subject: Geography
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