Living Things

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Across
  1. 2. have dry, scaly skin
  2. 5. Animals without a backbone
  3. 7. Have moist skin and no scales
  4. 9. Are vertebrates that live their entire lives in water
  5. 12. Don't have tubes
  6. 14. Are vertebrates with feathers
  7. 15. Is joined with the name of the smallest group, the species
  8. 16. Have hair and produce milk for their young
Down
  1. 1. Animals that have a backbone
  2. 3. This act of grouping things by using a set of rules
  3. 4. Kingdom also have only one cell
  4. 6. Is the largest group into which living things can be classified
  5. 8. Kingdom has only one cell
  6. 10. A group of living organisms consisting
  7. 11. Have nuclei, and most are many celled
  8. 13. Have tubes