Across
- 4. A space in sediment in the shape of an organism.
- 5. A change in a species over time.
- 6. Islands found off the coast of South America.
- 9. Differences among organisms within a species.
- 10. A copy of the shape of a preserved organism.
- 12. Organisms with better adaptations will survive.
- 15. Genetic traits that help an organism to survive.
- 16. Minor changes that add up to major changes over time.
- 17. The preserved remains of an organism.
Down
- 1. A person who studies the natural world.
- 2. Parts that are structurally similar in a related species.
- 3. A tested concept that explains a series of observations.
- 7. Breeding organisms for desired traits.
- 8. A work consisting of the theory of evolution.
- 11. A group of similar organisms.
- 13. An exampled of an organism preserved in ice.
- 14. A variety of living organisms.