Across
- 4. the houses form a city, the organs form an
- 5. know what is happening
- 7. creating more of the same kind
- 10. your heart and lung is an example of this
- 12. you are an
Down
- 1. building blocks of life
- 2. release of energy
- 3. you need to eat
- 6. not the one you use to blow your nose
- 8. getting rid of waste
- 9. changing position
- 11. increase in size