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Text File  |  1992-09-02  |  307b  |  10 lines

  1. A mountain is a natural upward projection of 
  2. the Earth's surface, higher and steeper than 
  3. a hill. The process of mountain building 
  4. (orogeny) consists of volcanism, folding, 
  5. faulting, and thrusting, resulting from the 
  6. collision and welding together of two 
  7. tectonic plates 
  8.  
  9. Subject by: Andrew Longhorn
  10.