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| What is the fossil record? |
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| What information do relative dating and radioactive dating provide about fossils? |
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| What are the main divisions of the geologic time scale? |
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| Why is the fossil record described as an incomplete record of life's gistory? |
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| What can be learned from the fossil record? |
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| Which type of dating provides an absolute age for a given fossil? Describe how this is done. |
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| How are eras and periods related? |
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| What geologic era is know a sthe Age of Mammals? When did this era begin? |
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| What were the characteristic forms of life in the Paleozoic,Mesozioc and Cenozoic eras? |
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