Across
- 2. Developed Charles Darwin stating that all different kinds of living things changed over time
- 4. The principle of ______ ________ _________ says that a rock is younger than any rock through which it cuts
- 6. The remains or traces of an organism preserved from the geologic past
- 7. The Principle of _________ __________ says that fossil organisms succeed one another in a definite order in the rock record
- 8. Process by which rocks are placed in proper sequence or order
- 9. Largest time unit on the geologic time scale
- 10. A type of fossil that is associated with a particular span of geologic time
Down
- 1. The Law of _______ states that each bed of rocks is older than the layers above and younger than the layers below
- 3. The principle of ________ _______ says that layers of sediment are generally deposited in a horizontal position
- 5. The division of Earth history into blocks of time
- 11. This time division of the geologic time scale is divided into shorter units called periods