Requirements of Human Wellbeing

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Across
  1. 2. The opposite of sadness
  2. 4. Being protected from harm
  3. 6. W.H.O. - the middle word of this worldwide organisation
  4. 8. Worn on the body
Down
  1. 1. The wet stuff that we cannot live without
  2. 3. What teachers hope their students get at school
  3. 5. Rhymes with health
  4. 7. Any nutritious substance