Across
- 2. System/ all cells require oxygen and excrete carbon dioxide as waste
- 4. System/ made up of heart,blood,and blood vessels
- 6. System/ responsible for digestive and extractive nutrients
Down
- 1. System/ includes body muscles, bones and joints.
- 2. System/ only system where female and male organs are different
- 3. System/ Responsible for protecting the body from infection
- 5. System/ made up of the brain and the nerves