character: Jacques Cousteau
topic: Impact of human activity on ocean ecosystems
grade: 9
subject: Geography
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character: Rachel Carson
topic: Environmental impact of pesticides on marine life
grade: 9
subject: Geography
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character: Sylvia Earle
topic: Human activities and their effects on ocean biodiversity
grade: 9
subject: Geography
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character: David Attenborough
topic: Chemical changes in ocean waters due to pollution
grade: 9
subject: Geography
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