Babylonian science

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Across
  1. 1. what you practice when you do addition or multiplication
  2. 5. a cool or interesting creation that could better humanity. Maybe.
  3. 6. an ancient city known for its hanging gardens
Down
  1. 2. they used to be used for writing, but now everyone knows them as kindles
  2. 3. something that tells you the days and months of the year
  3. 4. what chemistry, biology, or anatomy would fall under