character: Nutrient Cycle Navigator
topic: Role of Nutrients in Ecosystem Balance
grade: 9
subject: Science
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character: Carbon Cycle
topic: Impact of Carbon in Ecosystems
grade: 9
subject: Science
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character: Nitrogen Fixation
topic: Importance of Nitrogen in Plant Growth
grade: 9
subject: Science
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character: Water Cycle
topic: Role of Water in Sustaining Life
grade: 9
subject: Science
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