character: Dr. James Smith
topic: The Role of Stratigraphy in Understanding Geological Time
grade: 9
subject: Science
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character: Dr. Emily Johnson
topic: Principles of Stratigraphy and its Impact on Earth's History
grade: 9
subject: Science
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character: Professor Linda Wong
topic: Geological Time Scale: An Overview of Stratigraphic Layers
grade: 9
subject: Science
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character: Dr. Michael Brown
topic: Fossils and Stratigraphy: Clues to Earth's Past
grade: 9
subject: Science
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