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plate tectonic (Boundaries (types (continental - oceanic (west coast of…

- - - - makes volcanos
      - west coast of america
        
        Mt. St. Helens
      - makes lots of volcano
    - - forms islands with two oceanic crusts
      - island arcs
        
        illusion islands in alska
        
        Japan and small islands along it
    - - forms mountains
        
        example the himalayas
  - - - oceanic - oceanic #
      - continental - oceanic #
      - continental - continental #