character: Dr. Richard Lee
topic: The Biological Clock: Understanding Sleep Regulation
grade: 11
subject: Biology
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character: Circadian Rhythm
topic: The Role of Circadian Rhythms in Sleep Patterns
grade: 11
subject: Biology
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character: Melatonin Hormone
topic: How Melatonin Regulates Sleep and Wakefulness
grade: 11
subject: Biology
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character: Sleep Disorders
topic: Common Sleep Disorders and Their Biological Mechanisms
grade: 11
subject: Biology
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