Across
- 3. elimination of feces, undigested food
- 5. system of cell
- 7. need iron to make it
- 9. requires oxygen o2
- 11. blood back to the heart
- 12. simple substances to more complex
- 13. important organ to detox part of the excretory system
- 17. tired, weigh gain
- 18. system of cell
- 19. balance blood sugar (glucose)
Down
- 1. Only life process not needed for survival
- 2. calcium, magnesium, iron
- 4. motion
- 6. Lack of iron in blood
- 8. They don't make it's own food
- 10. Lowers blood sugar
- 14. help break things down
- 15. taking in nutrition, protein, vitamins
- 16. it tells the thyroid to release it's hormone