character: Dr. John White
topic: The Impact of Exercise on Bone Strength
grade: 9
subject: Science
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character: Dr. Smith
topic: Effects of Calcium Intake on Bone Density
grade: 9
subject: Science
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character: Dr. Emily Johnson
topic: How Weight-Bearing Exercises Affect Bone Health
grade: 9
subject: Science
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character: Professor Mark Lee
topic: The Role of Nutrition in Bone Strength
grade: 9
subject: Science
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