The Virtual Field Trips for Physical Geography CD-ROM is included as a special two-for-one package with this book. This CD-ROM uses computer technology to allow you to explore many geographically significant places. Using the CD, you can visit interesting places in field trips that include background material, panoramic views, and critical thinking exercises. The virtual field trip icon appears in the text at the most appropriate places from which you may want to embark upon one of these digital journeys. Please visit the McKnight/Hess, Physical Geography Web sites at www.prenhall.com/mcknight. This site, specific to the text, contains numerous review exercises (from which students receive immediate feedback), exercises to expand one's understanding of physical geography, and resources for further exploration.McKnight, Tom L. is the author of 'Physical Geog.-w/1 Cd:virtual Field Trp' with ISBN 9780130257109 and ISBN 0130257109.