character: Dr. Maria Lopez
topic: Biological Methods in Environmental Chemistry
grade: 12
subject: Chemistry
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character: Prof. John Smith
topic: Ecological Impact of Chemical Pollutants
grade: 12
subject: Chemistry
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character: Dr. Lisa Chen
topic: Bioremediation Techniques in Soil Chemistry
grade: 12
subject: Chemistry
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character: Mr. Alex Johnson
topic: Analyzing Water Quality using Chemical Methods
grade: 12
subject: Chemistry
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