character: Dr. Sarah Johnson
topic: Nutrition and Cardiovascular Health
grade: 9
subject: Science
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character: Dr. Mark Anderson
topic: Plant-Based Diets and Heart Health
grade: 9
subject: Science
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character: Dr. Emily Chen
topic: Exercise and Its Effect on Cardiovascular Fitness
grade: 9
subject: Science
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character: Dr. Robert Thompson
topic: The Role of Cholesterol in Heart Disease
grade: 9
subject: Science
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