Best one ever

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Across
  1. 5. one land hit another land
  2. 7. thing that hold food during dinner
  3. 8. large puzzle ______
  4. 10. one thing turns into another
Down
  1. 1. merge one thing with another
  2. 2. outer part of earth
  3. 3. big mountain full of lava
  4. 4. large slabs of rock that divide Earth's crust
  5. 6. crack in the ground because __________
  6. 9. fight one another