character: Bill Nye
topic: The Role of Estuaries in Ecosystem Balance
grade: 10
subject: Geography
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character: David Attenborough
topic: Importance of Coastal Ecosystems
grade: 10
subject: Geography
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character: Jane Goodall
topic: Impact of Human Activity on Natural Habitats
grade: 10
subject: Geography
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character: Sir David Attenborough
topic: Biodiversity and Conservation of Wetlands
grade: 10
subject: Geography
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