Across
- 3. an organism that lives and feeds on another organism
- 5. The ability to resist or recover from an infectious disease
- 7. disease caused by heredity or environmental factors
- 9. A disease caused by pathogen
Down
- 1. some are helpful to living things and some cause disease
- 2. an organism, virus or protein that causes disease
- 4. Made up of tissues and specialized white blood cells that attack foreign substances
- 6. Tiny particles that have their own genetic material but depend on living things to reproduce
- 8. A specialized protein that blinds to an antigen and tags it for destruction
- 10. They decompose, or break down dead plants and animals for use by other organisms