Khing's Crossword

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Across
  1. 2. / group of blood vessel
  2. 6. / a large, meaty organ that sits on the right side of the belly
  3. 8. dioxide / colorless and odorless gas vital to life on Earth
  4. 9. system / a passive biological system that remove unnecessary materials? from the body fluids
  5. 11. / What gas humans use breathing
  6. 12. / What tube of black blood
  7. 13. tube / Pipe for transporting sperm
  8. 14. / What part of body have air bag in the parts
Down
  1. 1. / red and black liquid in the body
  2. 3. / All system of breathing
  3. 4. / What parts of Body for egg production
  4. 5. / They are bean-shaped organs that serve several essential regulatory roles in vertebrates and duty is remove waste from the blood
  5. 7. blood / red liquid in the body
  6. 10. / What parts of Body for Sperm Production
  7. 13. / the soft outer covering of vertebrates