The Secret of the Yellow Death

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Across
  1. 2. requiring much skill and effort
  2. 4. to guard or defend something to keep it safe
  3. 7. a substance used to build and immunity to a disease
  4. 8. respect
Down
  1. 1. to show approval or to praise by clapping
  2. 3. the inhabitant (people) living in a certain area or region
  3. 5. children
  4. 6. the wealth and resources used to buy and sell goods