Across
- 2. eras that are subdivided into units of geologic time.
- 7. record of the geologic events and the Evolution of Life.
- 9. dominance of dinosaurs and Pangaea breaking apart
- 11. when geologic time begins with a kind span of time.
- 12. the numbers of years that have passed since the rock formed.
Down
- 1. things that are widely distributed in Earth's rock.
- 3. it's age compared to the ages of other rocks
- 4. when life increased in complexity and Pangaea formed
- 5. the division of time between the precambrian and the present into three long units.
- 6. to make changes or improvement to something based on new data.
- 8. to make something neat or to put things in order.
- 10. people that studied rocks and fossils records.