character: Dr. Smith
topic: Innovative Filtration Methods for Clean Water
grade: 11
subject: Chemistry
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character: Marie Curie
topic: The Role of Chemistry in Water Purification
grade: 11
subject: Chemistry
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character: Rachel Carson
topic: Environmental Chemistry and Water Quality
grade: 11
subject: Chemistry
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character: John Snow
topic: Historical Advances in Water Filtration Techniques
grade: 11
subject: Chemistry
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