Across
- 6. A well supported testable explanation of natural phenomena.
- 8. To take a long trip usually by boat.
- 9. A summation of the theory of natural evolutionary process that enable organisms best suited for their environment to survive.
- 11. Author of Principles of Geography.
- 13. Traits passed to offspring by their ancestors.
- 16. Captain of the M.M.S. Beagle,traveler to the Galapagos Islands and Theorist of Evolution.
- 18. When humans select variations they find useful.
- 20. A non-random process by which biological traits become more or less common in population as a primary function.
Down
- 1. Someone related to a person or group of people who lived in a earlier time.
- 2. A Second Theorist of Evolution, who Darwin looked up to.
- 3. A living thing made up of one or more cells and able to carry on the activities of life.
- 4. Theorist of Geological change.
- 5. Preserved remains of ancient organisms.
- 7. The State of being different, unlike others.
- 10. Small Islands of Ecuador.
- 12. 19th Century English Economist.
- 14. Of relating to biology or to life and living things.
- 15. A group of similar living things that are able to reproduce offspring.
- 17. Ship taken on a voyage around the world.
- 19. A change in species over time.