character: Chemical Engineer
topic: Chemical Properties of Pollutants
grade: 11
subject: Chemistry
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character: Environmental Scientist
topic: Impact of Chemical Pollutants on Ecosystems
grade: 11
subject: Chemistry
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character: Industrial Chemist
topic: Chemical Engineering and Pollution Control
grade: 11
subject: Chemistry
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character: Toxicologist
topic: Health Effects of Pollutants and Chemical Properties
grade: 11
subject: Chemistry
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