character: Dr. Jane Smith
topic: Impact of Nutrient Management on Algal Blooms
grade: 9
subject: Biology
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character: Prof. David Johnson
topic: Effects of Water Pollution on Aquatic Ecosystems
grade: 9
subject: Biology
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character: Ms. Linda Green
topic: Role of Phosphorus in Freshwater Environments
grade: 9
subject: Biology
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character: Mr. Tom Brown
topic: Strategies for Reducing Nutrient Runoff in Agriculture
grade: 9
subject: Biology
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