character: Ms. Johnson
topic: Importance of balanced nutrient levels in aquatic systems
grade: 10
subject: Biology
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character: Mr. Thompson
topic: Effects of nutrient pollution on aquatic ecosystems
grade: 10
subject: Biology
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character: Dr. Greene
topic: Nutrient cycling in freshwater environments
grade: 10
subject: Biology
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character: Mrs. Baker
topic: Impact of human activities on water quality and nutrient balance
grade: 10
subject: Biology
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