Across
- 3. The remains of an organism that lived a long time ago
- 5. Removed from existence
- 6. The structure of a living thing
- 7. Changes that happen over time in the gene pool
- 9. Occurring or going in order of time
Down
- 1. Body parts that are the same function but different structure
- 2. Type of rock formed when layers of sediment are pressed together
- 4. Ancestral organism shared by two or more descendent lineages
- 5. Unborn animal in the early stages of development
- 8. Same physical feature but different function