Across
- 2. A specific class of organisms
- 8. Islands where Darwin observed several species
- 9. the changes a species undergoes over time
- 12. A scientist who studies nature
- 13. A published work by Charles Darwin
- 14. Parts of an organism that allow it to survive
- 15. a proposed idea that may or may not be true
Down
- 1. Breeding animals to have certain characteristics
- 3. Occurs when a species naturally develops survival traits over time
- 4. inherited characteristics of an organism
- 5. when a group of organisms no longer exists
- 6. A species of bird studied by Charles Darwin
- 7. A chart used to classify organisms
- 10. Changes within a species that contributes to survival
- 11. Proposed the theory of natural selection