Scientists have created a geologic time scale, consisting of four eras, to keep track of changes during Earth's history. In a paragraph, outline the four eras, and describe the most important characteristics of each.
Chapter 7 Multiple Choice Answer Key

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The Answer of Scientists have created a geologic time scale, consisting of four eras, to keep track of changes during Earth's history. In a paragraph, outline the four eras, and describe the most important characteristics of each.
Chapter 7 Multiple Choice Answer Key

Scientists Have Created a Geologic Time Scale, Consisting of Four