character: Skeletal Sarah
topic: Impact of Exercise on Bone Density
grade: 9
subject: Science
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character: Fitness Fred
topic: How Weight-Bearing Exercises Strengthen Bones
grade: 9
subject: Science
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character: Bone Buddy
topic: Role of Nutrition in Bone Health
grade: 9
subject: Science
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character: Coach Calcium
topic: Understanding Osteoporosis and Its Prevention
grade: 9
subject: Science
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