Across
- 5. changes to fit the environment
- 6. ending another organism's life to survive
- 9. abnormality
- 10. eating plants to survive
- 11. choice of favorable traits
- 12. died out, no longer exists
- 14. having to do with nature
- 15. how favorable a trait is
Down
- 1. changes over time
- 2. traits pass through this
- 3. dividing resources into parts between species
- 4. an organism or object required to survive
- 7. having to do with traits
- 8. designed by humans
- 13. feeding off of a host to survive