SCIENCE

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Across
  1. 3. between uplands hills or mountains
  2. 6. contains a large amount of salt
  3. 9. rapidity in moving
  4. 10. move in a circular
  5. 12. amount of space
  6. 13. diversity among plants and animals species
  7. 14. indefinite expansion
  8. 15. mass per unit volume
  9. 16. cell division
  10. 17. molecules that moves freely
  11. 18. straining
Down
  1. 1. a stroke
  2. 2. unit of force
  3. 4. not contains a large amount of salt
  4. 5. time any planet completes revolution
  5. 7. genetic
  6. 8. volume reduces, air increase
  7. 11. mass of ice
  8. 13. one celled organisms
  9. 19. three dimensions, body or figure