Review 9

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Across
  1. 4. happening repeated times
  2. 5. causing feelings of pity
  3. 6. large waterfall
  4. 7. study of humans
  5. 8. farthest part of an orbit
Down
  1. 1. instrument for measuring time
  2. 2. a lack of feelings
  3. 3. person who hates humans
  4. 4. machine to throw down things
  5. 8. end of the world