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Week 6: Geological Timeline Monday Warmup: What is the geologic time scale? LT: I can explain how Earth’s geological history is divided in the geologic time scale. Review: Geologic Time Scale Earth is very old! - Estimated that earth is at least 4.5 billion years old - It would take a long amount of time to categorize earth’s history into days, months, or years...we needed a better way. - Scientists developed a way to categorize and explain earth’s history... GEOLOGICAL TIME
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