Across
- 6. They are similar in design, but different in function.
- 8. When offspring of a recent common ancestor diverge because they are adapted by different environments.
- 9. The process by which ancestral species evolve into a number of different species.
- 10. The process of determining an age on a specific time scale in achaeology and geology.
- 11. A group of the same species in the same area.
- 12. When organic materials in tree tissue leech out and are replaced by minerals.
Down
- 1. How well suited an organism is to its environment.
- 2. The result of geographic isolation and niches to be filled.
- 3. They are similar in function, but different in design
- 4. When you estimate the age of something compared to something else.
- 5. Impressions or indentations in rock.
- 7. Genetic change in a population over time.