Across
- 1. A chart used to classify organisms
- 4. A group of similar kingdoms
- 9. One of the three domains that includes plants and animals
- 10. The science of classifying living things
- 11. The person who created the modern classification system
- 13. The system used to name organisms
- 16. An organism without a nucleus
- 17. A tool used to identify organisms using choices
- 19. A domain made of single-celled organisms without a nucleus
- 20. The second word in a scientific name
Down
- 2. An organism with a nucleus
- 3. The broadest level of classification
- 5. The two-part scientific naming system
- 6. The classification level below kingdom
- 7. The first word in a scientific name
- 8. The classification level below domain
- 12. A group of organisms that can reproduce together
- 14. A domain of organisms that live in extreme environments
- 15. A scientist who classifies organisms
- 18. The language used for scientific names
