character: Ms. Emily Carter
topic: Understanding the Calcium-Vitamin D Relationship
grade: 9
subject: Science
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character: Dr. John Smith
topic: The Importance of Calcium in Bone Health
grade: 9
subject: Science
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character: Mrs. Lisa Johnson
topic: Vitamin D Sources and Benefits
grade: 9
subject: Science
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character: Mr. Robert Brown
topic: How Calcium and Vitamin D Work Together
grade: 9
subject: Science
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