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Across
  1. 3. to change (food) into a form that can be used by your body, to process and use (substances brought into your body) by metabolism
  2. 6. to change from a liquid into a gas
  3. 7. to set (something) on fire, to cause (something) to burn
Down
  1. 1. the ability to be maintained at a certain rate or level
  2. 2. to take something away from someone or something
  3. 4. a theory that is not proven but that leads to further study or discussion
  4. 5. to stop yourself from doing something that you want to do