Across
- 3. taking materials and making them useful
- 4. entering or leaving cells
- 6. constant internal environment
- 7. all the chemical reactions
- 9. releasing chemical energy
- 13. chemical substance in food
- 15. invokes two parents
- 16. the study of life
Down
- 1. controls and coordinates organism
- 2. simple substances to more complex
- 5. invokes one parent
- 8. increase in size
- 10. getting rid of undigested food
- 11. breaking down of food
- 12. taking in of food
- 14. removal of metabolic wastes