Written by: Stephen Pegler
Thursday, February 08, 2007

1. Which is longer, an epoch or an era?

2. What is the order of the 3 eras of the Earth's history?

3. What two principles help geologists do relative dating?

4. What are index fossils, and how are they used?

5. If a fossil has 7/8 of the original material changed into the daughter material, how many half lives have gone by?

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