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Air moving across the earth's surface. Wind direction and speed are determined by the relative atmospheric pressures in various locations. Small particles (particulates) of Dirt and pollutants can be carried long distances by the wind. The force of the wind can also cause Erosion.

Sources Checked for Data in Record

  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
  • Encyclopedia Britannica, Comment: "wind." Encyclopædia Britannica. 2005. Encyclopædia Britannica Premium Service 2 June 2005 .