Across
- 3. a medicine
- 4. change in characteristics over time
- 5. second highest taxonomy rank
- 8. a system of classification
- 10. came up with the theory of evolution
- 11. diagram used for classification
- 12. a theory of cell evolution
Down
- 1. a key mechanism in evolution
- 2. a variety of life in the world
- 6. a individual form of life
- 7. a formation of new species
- 9. a arrangement of species