Across
- 3. History of life documented by fossils.
- 7. Made fossil discoveries of organisms with backbones moving from water to land.
- 8. Lineage traced back to ancestors.
- 10. Remnants of an organism found in rock.
Down
- 1. Pattern of bones in tetrapods
- 2. Items above are younger than items beneath.
- 4. Amount of salt dissolved in a liquid.
- 5. Diagram showing how members of a family are related to each other.
- 6. Study of the Earth.
- 9. Diagram showing how items are related evolutionarily.