character: Ms. Johnson
topic: Nutrition for Bone Density
grade: 11
subject: Science
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character: Dr. Smith
topic: Calcium Sources for Strong Bones
grade: 11
subject: Science
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character: Mr. Lee
topic: Effects of Vitamin D on Bone Health
grade: 11
subject: Science
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character: Coach Taylor
topic: Exercise and Its Impact on Bone Density
grade: 11
subject: Science
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