Excretory System Puzzle
Across
- 3. sac that stores pee
- 6. system carbon dioxide
- 8. main organ of excretory system
Down
- 1. tube that transports the pee from the sac to outside
- 2. tubes that lead from the kidneys into the
- 4. stores air
- 5. the prosses of undigested food
- 7. cellular waste