character: Environmental Science Instructor
topic: Water Quality and Filtration Methods
grade: 11
subject: Chemistry
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character: High School Chemistry Teacher
topic: Chemical Properties of Water and Filtration Techniques
grade: 11
subject: Chemistry
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character: Research Scientist
topic: Impact of Filtration Methods on Water Purity
grade: 11
subject: Chemistry
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character: Environmental Activist
topic: Comparative Analysis of Filtration Systems on Water Quality
grade: 11
subject: Chemistry
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