Across
- 3. Proposed organisms could change over time
- 5. Traveled to the Galapagos Islands to study animals and published a book called On the Origin of Species
- 7. selects Increasing adaptation of organisms to the environment
- 8. All known traces of past life ever found
- 9. Science of classifying and naming organisms
- 10. Similar structures that related species have inherited from a common ancestor
- 11. An event when large numbers of species die out completely
- 12. Change in the heritable characteristics of biological populations over successive generations
- 14. Passed from organisms to their offspring
- 15. Gradual change over a long period of time leads to biological diversity
- 16. Developed the binomial format for naming species
- 18. The ability to survive and reproduce
Down
- 1. Common term used as a synonym for evolution
- 2. Any inherited characteristic or trait that increases an organism's chance of surviving
- 4. Changes in species at a molecular or gene level
- 6. Perform the same or similar function but evolved separately
- 13. Young naturalist working with Darwin
- 15. Group of islands where Darwin studied different organisms
- 17. Wrote the book "Essay on Population"