Oceanography crossword

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Across
  1. 3. period/of/inactivity
  2. 6. two/plates/move/away/from/eachother
  3. 9. 2/plates/come/together
  4. 10. smallest/weakest/cell
Down
  1. 1. crust/is/broken/into/plates
  2. 2. lowest/part/of/wave
  3. 4. plate/sinks/under/another
  4. 5. the/highest/part/of/wave
  5. 7. perrminant/winds/in/middle/lattitudes
  6. 8. mid/lattitude/region