character: Aquatic Plants
topic: Role of Aquatic Plants in Ecosystems
grade: 12
subject: Biology
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character: Fish Species
topic: Interdependence of Fish and Their Habitat
grade: 12
subject: Biology
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character: Aquatic Invertebrates
topic: Function of Invertebrates in Aquatic Ecosystems
grade: 12
subject: Biology
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character: Microorganisms
topic: Importance of Microorganisms in Aquatic Habitats
grade: 12
subject: Biology
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