Crossword Drift

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Across
  1. 3. what he found in other areas
  2. 4. of the large landmass
  3. 6. Wegener, Scientist name
  4. 7. he observed each of these
Down
  1. 1. boundary, causes plates to move
  2. 2. Drift, The theory
  3. 5. what we live on