biology crossword

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Across
  1. 3. chemical substances in food that an organism needs
  2. 5. involves activities that control and coordinate an organism
  3. 8. producing offspring involving two parents
  4. 10. the breakdown of foods into simpler material
  5. 12. something that has all the characteristics of life
  6. 14. condition of maintaining a constant internal environment
  7. 16. the taking in of food
  8. 17. involves all the chemical reactions in an organism
Down
  1. 1. removal of an organisms metabolic waste
  2. 2. how am organism takes materials from the environment and converts it to something they can use
  3. 4. producing new offspring
  4. 6. materials leaving the cells and get moved around in the organism
  5. 7. producing new offspring that involves one parent
  6. 9. the study of life
  7. 11. involves getting rid of undigested food from the body
  8. 13. combining simple substances to make more complex substances
  9. 15. increase in the size of an organism