Science Biology

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Across
  1. 5. Starts with an I
  2. 9. touch/reaction
  3. 10. when organisms get older they ....
  4. 11. fish
  5. 12. a living....
  6. 13. the 7 characteristics of living things
Down
  1. 1. ectotherms, lay eggs without shell
  2. 2. breathing
  3. 3. Fur or hair, and endotherm.
  4. 4. birds
  5. 6. living organisms all need ..
  6. 7. the first of the 7 levels
  7. 8. multicellular, and gains energy from sunlight