AP Photo/Courtesy Wild Life Heritage Trust / Joseph Malcolm Smith/Photo Researchers Inc. / Science Photo Library/Photo Researchers Inc. / Joe McDonald/Visuals Unlimited / Gary Will/Visuals Unlimited / Bill Beatty/Visuals Unlimited / Barry Croucher/Wildlife Art Ltd. / Robin Carter/Wildlife Art Ltd. / Oliver Meckes/Nicole Ottawa/Photo Researchers Inc. / David Scharf/Peter Arnold Inc. / Illustration / Gary Meszaros/Visuals Unlimited / Central America MapQuest.com Inc. / Nibsc/Photo Researchers Inc. / Anatomical Travelogue/Photo Researchers Inc. / CNRI/Photo Researchers Inc. / Kessel & Dr. Gene Shih/Visuals Unlimited / Gusto/Photo Researchers Inc. / Chassenet/Photo Researchers Inc. / David McCarthy/Photo Researchers Inc. / Ed Reschke/Peter Arnold Inc. / David Parker/Photo Researchers Inc. / E. R. Degginger/Photo Researchers Inc. / Steve Gschmeissner/Photo Researchers Inc. / Du Cane Medical Imaging Ltd. / Brian Rogers/Visuals Unlimited / M.I. Walker/Photo Researchers Inc. / SPL/Photo Researchers Inc. / Basel/Photo Researchers Inc / UCT/Photo Researchers Inc. / Myke Taylor/Wildlife Art Ltd. / Getty Images / Susumu Nishinaga/Photo Researchers Inc. / Tim Beddow/Photo Researchers Inc. / John Daniels/Ardea London Limited / Claude Edelmann/Photo Researchers Inc. / Photo Researchers Inc. / Rob Fiocca/PictureArts Corporation / Martin Dohrn/Photo Researchers Inc. / Science/Photo Researchers Inc. / D. Philips/Photo Researchers Inc. / Wildlife Art Ltd. / Egmond/Visuals Unlimited / /
Inklink Studio / University of Southampton / Chip Clark/National Museum / Natural History Museum / University of Basel/Photo Researchers / dam Illustration / /
IndustryTerm
nervous and endocrine systems / energy / electron transport chain / /
NaturalFeature
Don Geyer/Alamy Images estuary / Mules/CSIRO forest / Nik Wheeler/Corbis lake / Bay National Estuary Program ocean / /
Organization
HO Chapter / Brookhaven National Laboratory Chapter / USDA / Peter Batson/ExploreTheAbyss.com Chapter / Joel Harris Chapter / Stephen Durke Chapter / Debbie Maizels Chapter / Scott Tysick/Masterfile Chapter / Chuck Savage/Corbis Chapter / Educational Images/Custom Medical Stock Photo Chapter / National Centre for Medical Genetics / University of Basel/Photo Researchers / Smithsonian / Inklink Studio/Sparks Arts & Literary Agents Chapter / D. W. Fawcett/Visuals Unlimited Chapter / Frank Lane Picture Agency / Bart Vallecoccia Chapter / Comstock Production Department / Zigmund Leszczynski/Animals Animals Chapter / Dennis Kunkel/Visuals Unlimited Chapter / Ken Wagner/Phototake Chapter / Ireland Chapter / Scenes Chapter / Interactive Review Biology Photo Credits Chapter / National Aeronautics and Space Administration / Peter Bull Chapter / University of Southampton / /
Person
Stuart Carter / Dennis Kunkel / Joel Ito Miller-Urey / Lester V. Bergman / Stephen Durke / Scott Tysick / Dennis Frates / Chuck Savage / Yorgos Nikas / David Greenwood / George D. Lepp / Arnold Greenwell / Sharon Hoogstraten / Scott Camazine / Ken Wagner / Brandon D. Cole / Stephen Frink / David Hosking / Patricia Fogden / Michael Nichols / Alan Linn / Ron Sturm / Wolfgang Kaehler / Joe McDonald / Gopal Murti / Scott Bauer / Steve Dunwell / Ann McCarthy / Cameron Marlow / Luigi Galante / Scott Sinklier / Peter Bull / Lori Adamski Peek / D. Allen Photography / Raymond Gehman / Pat OíHara / Carlos Villoch / Tom Bean / Ann Simpson / Joel Harris / Don Geyer / Chris Howes / Hanan Isachar / Roger Steene / Alan Male / Christine Harrison / Piotr Naskrecki / Arthur Morris / Debbie Maizels / Robert Koch / Frank Lane / Bart Vallecoccia / Matthew Wiley / Harris Chapter / Linda Stannard / Ralph C. Eagle Jr. / Jon Feingersh / Thomas Bayley / Garth Glazier / Mark Jones / Craig Tuttle / Terry Whittaker / Phil Savoie / Dwight Kuhn / Jeremy Burgess / Jim Sugar / Hans Christoph Kappel / Jurgen Freund / Peter Batson / Pete Oxford / George McCarthy / Peter Harris / Mike Wilkes / Grant Heilman / Dietmar Nill / Martin Gabriel / /
Position
biologist / ecologist / Professor / scientist / snake head / /
Interactive Review Biology Photo Credits Chapter 1 orchid © Martin Gabriel/naturepl.com thorn bug © Bill Beatty/Visuals Unlimited biodiversity globe © Getty Images biologist making notes Michael Nichols/National Geogr