Across
- 7. small ancient sea animal shaped like a horseshoe
- 8. all the living and nonliving things on earth
- 9. extremely old
- 11. small pieces of rocks and minerals
- 14. sedimentary rocks form these over time
- 15. show scientists how quickly an animal ran
Down
- 1. words used to describe something
- 2. a person who studies dinosaur fossils
- 3. show what types of foods an animal ate
- 4. years it takes to make a fossil
- 5. only type of rock where fossils can be found
- 6. a living person, plant, or animal
- 10. a community of interacting organisms and their environment
- 12. bones of living things
- 13. evidence of ancient life