00627nam a2200169   4500008004100000020001500041050002000056100002900076245011000105250001200215260004300227300006900270650002800339650001900367650003800386650003300424150911b        xxu||||| |||| 00| 0 eng d  a0130651729  aGE 105.M33 2002  aMackenzie, Fred T.d2002  aOur changing planet:bAn introduction to earth system and global environmental changec Fred T. Mackenzie  a3rd ed.  aNew Jersey,bPearson education,c2002.  axi, 580 p. :ill.bIncludes bibliographical references and index.  aEnvironmental sciences.  aHuman ecology.  aNature-Effect of human beings on.  aGlobal environmental change.