character: Emma
topic: Importance of pH in Food Preservation
grade: 9
subject: Chemistry
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character: Liam
topic: Effects of pH on Microbial Growth
grade: 9
subject: Chemistry
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character: Sophia
topic: Chemical Reactions in Food Preservation
grade: 9
subject: Chemistry
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character: Jackson
topic: Role of Acids and Bases in Food Safety
grade: 9
subject: Chemistry
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