character: Dr. Sarah Lin
topic: Logistics and carbon footprint in food supply chains
grade: 9
subject: Geography
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character: Professor John Carter
topic: Impact of transportation on environmental sustainability
grade: 9
subject: Geography
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character: Dr. Emily Chen
topic: Sustainable agriculture practices and their ecological footprint
grade: 9
subject: Geography
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character: Mr. David Green
topic: The role of supply chain management in reducing carbon emissions
grade: 9
subject: Geography
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