character: Dr. Osteon
topic: The Importance of Bone Density in Health
grade: 11
subject: Science
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character: Dr. Calcium
topic: Role of Calcium in Bone Health
grade: 11
subject: Science
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character: Professor Osteoporosis
topic: Preventing Bone Loss in Adolescents
grade: 11
subject: Science
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character: Dr. Nutrition
topic: Nutrition's Impact on Bone Density
grade: 11
subject: Science
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