character: Environmental Scientist
topic: Impact of Hazardous Materials on Ecosystems
grade: 11
subject: Chemistry
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character: Biochemist
topic: Chemical Reactions in Ecosystems
grade: 11
subject: Chemistry
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character: Ecologist
topic: Study of Ecosystem Responses to Pollution
grade: 11
subject: Chemistry
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character: Toxicologist
topic: Effects of Toxic Substances on Wildlife
grade: 11
subject: Chemistry
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