POWER UP Crossword Challenge

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Across
  1. 1. To make something do what you want.
  2. 4. To act in a good or bad way.
  3. 5. A person who studies or works in one of the sciences.
  4. 7. A problem or difficulty.
  5. 8. To say or do something again.
Down
  1. 2. To cut a body open for medical reasons.
  2. 3. the use of scientific discoveries in order to help people do things.
  3. 6. Not normal or usual; unusual