Natural Selection

12345678910111213
Across
  1. 1. resemblance of one species to another
  2. 4. The boat in which Darwin took his trip
  3. 6. a type of adaptation that involves the way an organism reacts
  4. 9. a slight difference in a trait of an individual
  5. 10. a naturalist who developed a theory how evolution works
  6. 11. an inherited trait that increases an organism's chance of surviving and reproducing
  7. 13. survival of the fittest
Down
  1. 2. blending in with the environment
  2. 3. a person who studies plants and animals by observing them
  3. 5. when humans breed organisms for a desired trait. Also known as artificial selection
  4. 7. a type of adaptation that ivolves the internal body system
  5. 8. The islands that Darwin made many of his observations
  6. 12. a type of adaptation that involves color, shape, and other physical characteristics