Across
- 4. Age of Reptiles
- 5. Monera, Protista, Fungi, Plantae, and Animalia
- 7. every organism has a unique, 2 part name
- 8. Radioactive dating uses carbon to determine how many _______s a fossil has lived
- 11. ended when the first multicellular organism was created
- 14. The taxonomy 5th in line
- 15. the oldest form of bacteria
- 16. shorter than an era but longer than an epoch
- 19. The second half of the name in binomial nomenclature
- 20. A major division of time spanning a very long span of history
Down
- 1. A taxonomy below kingdom and above Class
- 2. Age of mammals and insects
- 3. The first half of the name in binomial nomenclature
- 6. The largest form of taxonomy
- 9. The next possible mass extinction happening now
- 10. the branch of science concerned with classification, especially of organisms
- 12. written tool used to identify organisms, a series of choices between two options
- 13. Age of Marine Life
- 17. The taxonomy 4th in line
- 18. The taxonomy above genus
