character: Dr. Emily Carter
topic: Sustainable Water Management in Arid Regions
grade: 9
subject: Geography
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character: Professor Mark Johnson
topic: Rainwater Harvesting Techniques
grade: 9
subject: Geography
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character: Dr. Sarah Lee
topic: Desalination Technology and Its Impact
grade: 9
subject: Geography
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character: Mr. James Smith
topic: Soil Conservation Practices in Drylands
grade: 9
subject: Geography
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