Across
- 1. Smallest level of organization
- 3. Body system that causes voluntary and involuntary motion
- 4. Body system that protects soft organs and supports human body
- 7. Body system that exchanges gases with the environment, Oxygen gas in, carbon dioxide gas out
Down
- 1. Body system that moves gases and nutrients around body
- 2. a group of organs working together
- 5. A group of similar cells working together
- 6. a group of similar tissues working together