Staying healthy"Vocabulary"

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Across
  1. 2. help someone or something to get better
  2. 4. system that your body protects you from disease
  3. 7. disease that affects a particular part of your body and is caused by bacteria or a virus
  4. 9. the smallest separate part of plant or animal
  5. 10. to do something,especially something difficult or useful
Down
  1. 1. special way of doing something
  2. 3. part of your body that performs a job,e.g. the brain or heart
  3. 5. to behave in a particular way or show a particular emotion
  4. 6. very small thing that causes disease
  5. 8. very bad or very serious
  6. 9. breathing air into the mouth of an unconscious person