Across
- 1. Where does gas exchange occur in the human respiratory system?
- 7. How does gas exchange differ between plants and animals?
- 10. What is the role of the immune system in fighting infections?
- 12. How do vaccines prevent infectious diseases?
- 13. How do antibodies function in immunity?
- 14. How does the body acquire immunity?
Down
- 2. What cells are involved in immune responses?
- 3. How do gases like oxygen and carbon dioxide move during gas exchange?
- 4. Why is the surface area important for efficient gas exchange?
- 5. What is the difference between bacterial and viral infections?
- 6. How are infectious diseases transmitted?
- 7. What causes infectious diseases?
- 8. What is the role of vaccines in immunity?
- 9. What is the primary purpose of gas exchange in organisms?
- 11. What is immunity?