World Of Earth Science

EARTH SCIENCE WORLD of K. Lee Lerner and Brenda Wilmoth Lerner, Editors Vo l u m e 1 A-L EARTH SCIENCE WORLD of World of Earth Science K. Lee Lerner and Brenda Wilmoth Lerner Project Editor Ryan L. Thomason Permissions Shalice Shah-Caldwell Product Design Michael Logusz, Tracey Rowens Editorial Deirdre S. Blanchfield, Madeline Harris, Kate Kretschmann, Michael D. Lesniak, Kimberley A. McGrath, Brigham Narins, Mark Springer Imaging and Multimedia Robert Duncan, Leitha Etheridge-Sims, Lezlie Light, Kelly A. Quin, Barbara J. Yarrow Manufacturing Wendy Blurton, Evi Seoud © 2003 by Gale. Gale is an imprint of The Gale Group, Inc., a division of Thomson Learning, Inc. For permission to use material from this product, submit your request via Web at http://www.gale-edit.com/permissions, or you may download our Permissions Request form and submit your request by fax or mail to: While every effort has been made to ensure the reliability of the information presented in this publication, The Gale Group, Inc. does not guarantee the accuracy of the data contained herein. The Gale Group, Inc. accepts no payment for listing; and inclusion in the publication of any organization, agency, institution, publication, service, or individual does not imply endorsement of the editors and publisher. Errors brought to the attention of the publisher and verified to the satisfaction of the publisher will be corrected in future editions.