Across
- 1. resemblance of one species to another
- 4. The boat in which Darwin took his trip
- 6. a type of adaptation that involves the way an organism reacts
- 9. a slight difference in a trait of an individual
- 10. a naturalist who developed a theory how evolution works
- 11. an inherited trait that increases an organism's chance of surviving and reproducing
- 13. survival of the fittest
Down
- 2. blending in with the environment
- 3. a person who studies plants and animals by observing them
- 5. when humans breed organisms for a desired trait. Also known as artificial selection
- 7. a type of adaptation that ivolves the internal body system
- 8. The islands that Darwin made many of his observations
- 12. a type of adaptation that involves color, shape, and other physical characteristics