Across
- 2. brings in oxygen and expels carbon dioxide
- 5. helps the body fight infections and diseases
- 7. system that delivers oxygen to the body
- 9. removes waste and toxins from the body
- 12. a single living thing formed by all organs
- 13. a state of balance in the organism
Down
- 1. organs work together as the organisms control center
- 3. aids movement in the body and protects the inner organs
- 4. allows movement for the organism
- 6. a layer of cell that work together to do a task
- 8. the basic unit of life in all living things
- 10. a group of organs that work together to do a task
- 11. takes in food and liquids that the body can use for energy