Crossword

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Across
  1. 5. stores the bile
  2. 6. liquid waste
  3. 7. regulates liquids in the blood
  4. 9. Tubes that connect the bladder and kidney
  5. 12. food broken into smaller pieces
  6. 14. cleans toxins from the blood, makes bile
  7. 15. the change of food into new substances
  8. 16. brings in O2, removes CO2
  9. 17. what the body needs but doesn't make
Down
  1. 1. uses O2 to break apart glucose
  2. 2. Organs that break down food into nutrients
  3. 3. small part of kidney that filters blood
  4. 4. muscles push food through the digestive system
  5. 8. exit tubes
  6. 10. space in chest
  7. 11. organ that filters blood
  8. 13. tiny air sacs in lungs