character: Aquatic Scientist
topic: Impact of Nutrients on Freshwater Ecosystems
subject: Science
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character: Freshwater Ecologist
topic: Nutrient Cycling in Lakes and Rivers
subject: Science
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character: Environmental Biologist
topic: Effects of Eutrophication on Aquatic Life
subject: Science
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character: Water Quality Specialist
topic: Monitoring Nutrient Levels in Aquatic Systems
subject: Science
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