Across
- 3. these structures have similar functions, but do no share ancestry
- 5. these animals are a good example of transitional fossils
- 6. a heritable characteristic that increases an organisms' ability to survive and reproduce
- 9. all of the variety of organisms on Earth
- 11. this is how animal babies develop, and it shows how similar we are
- 12. how well an organism can survive and reproduce
- 13. the study of rocks
- 14. these structures have lost their original size and function, and suggest ancestry
- 16. these structures are an example of this is the forearm of vertebrates
- 17. this type of selection is when mother nature chooses who lives
- 19. the miniature version of the giant Glyptodon
- 21. when a species of organism completely dies off
Down
- 1. Earth's tallest mountains(where marine fossils are found)
- 2. the fact that all living things use A-T-C-G says we are all related
- 4. ancient remains of organisms
- 7. this type of selection where humans choose the desirable traits
- 8. the study of where organisms live now and where their ancestors lived in the past
- 10. the ancient supercontinent
- 15. this says that all living things are related
- 18. Earth's 2nd tallest mountains
- 20. the dude who came up with the idea of evolution and natural selection
