plate tectonics

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Across
  1. 4. _______& erosion produces sediment
  2. 5. how many major plates are there
  3. 8. rocky outer part of earth
Down
  1. 1. lies beneath the cool, brittle crust and the mostly-solid mantle.
  2. 2. ______& continental plates
  3. 3. lies between Earth's dense, super-heated core and its thin outer layer
  4. 6. how many minior plates are there
  5. 7. scientist that formulate theory of plate tectonics