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Across
  1. 5. To improve our physical fitness we ________ .
  2. 6. to create something new for the first time
  3. 8. to make known especially in words
  4. 9. a person who specializes in science
Down
  1. 1. someone from whom you have descended
  2. 2. not joking in any manner
  3. 3. past tense of subside
  4. 4. to trouble someone
  5. 7. the condition of being free from illness