Across
- 4. tissues that work together to function your body
- 5. the making of reproductive cells
- 8. takes food in and breaks it down and creates waste
- 9. when your muscles have no strength
- 10. different pieces of a body that help keep it running
- 12. smallest unit of life
- 15. helps keep mammels alive
- 16. blood vessels that carry blood from and to the heart
- 17. helps control what your body is doing
- 18. the structure of an living organism
- 19. system– helps the body stay up and do activities
Down
- 1. the most popular mammal
- 2. the ability to work your muscles to lift heavy items
- 3. what is used to be alive
- 6. what makes up a human
- 7. swap of carbon dioxide and oxygen between the air and the body
- 9. helps organisms to move
- 11. a part of your body with lots of cells that help fight infenctions and diseases
- 13. where the waste that the body creates is let out
- 14. cells that work together to function your body