Unit 3

5. (of an illness) persisting for a long time or constantly recurring.
6. interrupt (an event, activity, or process) by causing a disturbance or problem.
7. continuing firmly or obstinately in an opinion or course of action in spite of difficulty or opposition.
12. a part of a whole.
13. a feeling of worry, nervousness, or unease about something with an uncertain outcome.
15. a disorder of structure or function in a human, animal, or plant, especially one that has a known cause and a distinctive group of symptoms, signs, or anatomical changes.
17. do, use, or carry to excess; exaggerate.
18. a damaging immune response by the body to a substance, especially a particular food, pollen, fur, or dust, to which it has become hypersensitive.
22. (of an unpleasant or unwelcome situation or phenomenon) present or experienced to a severe or intense degree.
24. The invasion and growth of germs in the body.
25. cause (a device) to function.
26. above a weight considered normal or desirable.
27. the quality or state of being different or diverse; the absence of uniformity or monotony.

1. physical power; strength.
2. active and energetic.
3. easily prepared processed food served in snack bars and restaurants as a quick meal or to be taken away.
4. average in amount, intensity, quality, or degree.
8. a quantity of food suitable for or served to one person.
9. absolutely necessary; essential.
10. keep away from or stop oneself from doing (something).
11. A stroke, sometimes called a brain attack, occurs when something blocks blood supply to part of the brain or when a blood vessel in the brain bursts.
14. keep (something) from happening.
16. a natural desire to satisfy a bodily need, especially for food.
19. a circumstance, fact, or influence that contributes to a result.
20. causing or likely to cause harm.
21. arranged in or constituting a constant or definite pattern, especially with the same space between individual instances.
22. a useful or valuable thing or person.
23. an expert on diet and nutrition.