Across
- 2. Common microscopic organisms
- 4. The immune system keeps us healthy
- 5. A dangerous immune response to a safe substance
- 6. What can happen when germs invade the body?
- 7. Proteins that help get rid of infections
- 8. A body system that works to keep the organism healthy
Down
- 1. Very small things that often cause infections When a virus or microorganism enters the body
- 3. An increase in body temperature when sick
- 5. Which of the following are not a germ? bacteria/ virus/antibody
- 9. The outer covering of the body