Across
- 2. process by which individuals that are better adapted to their environment are more likely to survive and reproduce
- 3. Proposed the theory of natural selection
- 5. theory that organisms change over time
- 10. A well tested idea backed by evidence and observations
- 12. Differences between members of the same species
- 13. Inherited characteristics of an organism
- 14. A species of birds studied by Charles Darwin
Down
- 1. trait the helps an organism survive and reproduce
- 4. When a group of organisms no longer exists
- 6. when more offspring are produced than can possibly survive
- 7. A specific class of organisms
- 8. Breeding animals to have certain characteristics
- 9. A scientist who studies nature
- 11. Islands where Darwin observed several species