natural selection
Across
- 3. a process in which an organism is born
- 6. getting used to \ adapta-
- 8. material that all living organisms have
- 9. living or existing
- 10. carefully choosing
Down
- 1. not made by humans
- 2. evolving
- 4. count of something
- 5. changing of a gene\ muta-
- 7. a living thing