Across
- 2. Everything Cutting through the rock is newer
- 4. Found using fossils
- 5. Parts of one layer found in another
- 9. Newer Layers are on top
Down
- 1. Found using the half life
- 2. The amount of carbon-14 in an isotope
- 3. Traces of organisms, petrified or found in rock
- 6. Current Era
- 7. Chaotic conditions on the Earth
- 8. Dinosaurs, Continental Drift started