character: Ecologist
topic: Studying the effects of chemicals on ecosystems
grade: 9
subject: Chemistry
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character: Chemist
topic: Chemical interactions in ecosystems
grade: 9
subject: Chemistry
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character: Environmental Scientist
topic: Impact of pollutants on wildlife
grade: 9
subject: Chemistry
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character: Toxicologist
topic: Effects of toxins on ecosystem health
grade: 9
subject: Chemistry
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