1. For how long has there been life on earth? 2. For what percentage of time has life existed on earth (round to the nearest whole number) ? 3. For about how many years of geological time have humans existed on earth? 4. For about how many years of geological time have the dinosaurs existed on earth? 5. Did dinosaurs exist at the same time as humans? 6. How do scientist determine when an era begins and when it ends? 7. What is the purpose of making a geological timeline?

1. For how long has there been life on earth? 2. For what percentage of time has life existed on earth (round to the nearest whole number) ? 3. For about how many years of geological time have humans existed on earth? 4. For about how many years of geological time have the dinosaurs existed on earth? 5. Did dinosaurs exist at the same time as humans? 6. How do scientist determine when an era begins and when it ends? 7. What is the purpose of making a geological timeline?

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter18: Introduction To Darwinian Evolution

Section: Chapter Questions

Problem 1TYU: Evolution is based on which of the following concepts? (a) organisms share a common origin (b) over...

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For how long has there been life on Earth? For what percentage of time has life existed on Earth? For about how many years of geological time have human existed on earth?
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