字谜

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Across
  1. 5. The process of obtaining food necessary for health.
  2. 6. Absolutely necessary; extremely important.
  3. 9. Another option or choice.
  4. 10. Natural substances like calcium and iron,found in food.
Down
  1. 1. Produced or practised without using artificial chemicals.
  2. 2. To break down food in the body.
  3. 3. Found or distributed over a large area.
  4. 4. To make suffering less severe.
  5. 7. A particular part or feature of something.
  6. 8. Microscopic organisms, some of which can cause disease.