Across
- 4. Germs like bacteria or viruses that invade the body and cause illness.
- 5. converted into energy
- 7. where the digestive journey begins
- 8. when this is inhaled, blood goes to the heart and is pumped through the body to the cells & tissues. Carbon dioxide is exhaled.
- 9. Digestive juices that assist in breaking down food
- 10. Developed to kill or disable certain bacteria
Down
- 1. avoid this to prevent many chronic lung and respiratory illnesses
- 2. system that produces hormones
- 3. a disease of the reproductive system
- 6. the period during which adolescents reach sexual maturity and become capable of reproduction