character: Environmental Scientist
topic: Impact of Hazardous Waste on Ecosystems
grade: 11
subject: Chemistry
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character: Chemist
topic: Chemical Properties of Hazardous Waste
grade: 11
subject: Chemistry
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character: Ecologist
topic: Ecosystem Recovery from Contamination
grade: 11
subject: Chemistry
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character: Biologist
topic: Effects of Toxins on Biodiversity
grade: 11
subject: Chemistry
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