Across
- 1. a global epidemic is called...
- 4. organisms which depend on their host to develop
- 5. element which makes up human body
- 6. cells that protect human body from foreign substances
- 7. macronutrient that is essential to building muscle mass
Down
- 2. capacity to tolerate, resist harm/reject foreign body
- 3. disease believed to be the earliest
- 4. most effective method of preventing diseases