do your work

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Across
  1. 1. proposed answer
  2. 2. releases energy into cells
  3. 3. for energy and growth
  4. 4. atoms joined together
  5. 8. the body system
  6. 11. and oxygen atoms
  7. 14. you have evidnces to supports
  8. 16. A oxygen and releases carbon
  9. 17. proteins
  10. 18. you have evidences
Down
  1. 1. the body system
  2. 5. support
  3. 6. substances
  4. 7. you go place to get on the network
  5. 9. air or water
  6. 10. you have molecules to connected
  7. 12. oxygen atoms
  8. 13. change
  9. 15. large molecules