111 / 116
Credits
FOSS Staff at the Lawrence Hall of Science, University of California, Berkeley
Linda De Lucchi, Codirector
Larry Malone, Codirector
Kathy Long, Assessment Coordinator and Curriculum Developer
Kimi Hosoume, Curriculum Developer
Brian Campbell, Curriculum Developer
Erica Beck Spencer, Curriculum Developer
David Lippman, Program Manager
Delta Education Staff
Editorial Director, Elementary Science: Bonnie A. Piotrowski
Project Team: Mathew Bacon, Jennifer Apt, Sandra Burke, Joann Hoy, Jacquelyn Lachance, Angela Miccinello
Cover and Series Design
Dinardo Design LLC, Concord, MA
Photo Credits
Cover: © Lori Labrecque/Shutterstock; Title Page: © Brian A Jackson/Shutterstock; Page 1: © Cheryl E. Davis/Shutterstock; Page 3: © iStockphoto/Michael Hill (avocado); ©
Ivaschenko Roman/Shutterstock (olives); © photomaru/Shutterstock (peaches); © iStockphoto/MistikaS (apricots); Page 4: © Elena Schweitzer/Shutterstock (top left); © nito/
Shutterstock (bottom left); © Valentyn Volkov/Shutterstock (top right); © petrmohyla/Shutterstock (middle right); © CSKN/Shutterstock (bottom right); Page 5: © Derek Teo/
Shutterstock (top); © Rose Craig/Lawrence Hall of Science (middle); © Chris Hill/Shutterstock (bottom); Page 6: © Lepas/Shutterstock (left); © photomaru/Shutterstock (top right);
© JIANG HONGYAN/Shutterstock (bottom right); Page 7: © Julia Zakharova/Shutterstock (grapes); © saiko3p/Shutterstock (bananas); © magicoven/Shutterstock (oranges); ©
Brian Weed/Shutterstock (cantaloupe); Page 8: © PlanetGaia dot net/Shutterstock; © Stanislav Komogorov/Shutterstock (inset); Page 9: © zhuda/Shutterstock (top); © Mircea
BEZERGHEANU/Shutterstock (top inset); © Kolaczan/Shutterstock (bottom left); © Murat Subatli/Shutterstock (bottom middle); © Katrina Leigh/Shutterstock (bottom right); Page
10: © Cathy Keifer/Shutterstock (left); © szefei/Shutterstock (top right); © ILLYCH/Shutterstock (bottom right); Page 11: © Roger de Montfort/Shutterstock (top); © Tatuasha/
Shutterstock (bottom); Page 12: Courtesy of Cold Spring Harbor Laboratory Archives; Page 13: © Fred Leonero/Shutterstock (left); © samotrebizan/Shutterstock (left inset); ©
Blanche Branton/Shutterstock (right); Page 14: © CORBIS/Bettmann; Page 15: © Arvind Balaraman/Shutterstock (top); Courtesy of Cold Spring Harbor Laboratory Archives
(bottom); Page 16: © Erica Beck Spencer/Lawrence Hall of Science; Page 17: © iStockphoto/Kyu Oh; Page 18: © iStockphoto/Richard Wöhrl (top left); © Lori Labrecque/
Shutterstock (top right); © Dirk Ercken/Shutterstock (bottom left); © John Czenke/Shutterstock (bottom right); Page 19: © Tatiana Grozetskaya/Shutterstock (top left); ©
iStockphoto/zhang bo (top right); © Joy Rector/Shutterstock (bottom); Page 20: © Andreas Nilsson/Shutterstock (top); © Elena Leonova/Shutterstock (bottom); Page 21: ©
Stephen Dalton/Getty Images (top left); © tomas del amo/Shutterstock (top right); © Richard Dombek/Shutterstock (bottom left); © Graça Victoria/Shutterstock (bottom middle);
© iStockphoto/brian brew (bottom right); Page 22: © Lorraine Kourafas/Shutterstock (left); © Larry Malone/Lawrence Hall of Science (top right); © Goncharuk/Shutterstock
(middle right); © Aaron Amat/Shutterstock (bottom right); Page 23: © plastique/Shutterstock (top); © Filipe B. Varela/Shutterstock (bottom); Page 24: © Andrew Orlemann/
Shutterstock (top); © Rui Manuel Teles Gomes/Shutterstock (bottom); © iStockphoto/Liga Kandele (bottom inset); Page 25: © Louella938/Shutterstock (left); © Dariusz Majgier/
Shutterstock (right); © Quang Ho/Shutterstock (bottom); Page 26: © Bogdan Wankowicz/Shutterstock; Page 27: © Scott MacNeill; Page 28: © iStockphoto/Susan Wood (top); ©
Ron Rowan Photography/Shutterstock (right); © irishman/Shutterstock (bottom); © Sylvana Rega/Shutterstock (left); Page 29: © Robert F. Sisson/National Geographic/Getty
Images (top); © Patti Murray/Animals Animals (right); © Alie Van Der Velde-baron/Dreamstime.com (bottom); © abxyz/Shutterstock (left); Page 30: © Picavet/Getty Images (top);
© iStockphoto/Jello5700 (bottom); © Chase B/Shutterstock (left); Page 31: © mitzy/Shutterstock (top); © iStockphoto/Tommounsey (right); © iStockphoto/Riegsecker (bottom); ©
Ilias Strachinis/Shutterstock (left); Page 32: © dragon_fang/Shutterstock (top left); © MountainHardcore/Shutterstock (top middle); © Kenneth William Caleno/Shutterstock (top
right); © Jaroslav74/Shutterstock (bottom left); © Mircea BEZERGHEANU/Shutterstock (bottom middle); © Bruce MacQueen/Shutterstock (bottom right); Page 33: © Anke van
Wyk/Shutterstock (top right); © Guy Erwood/Shutterstock (lower right); © Voronin76/Shutterstock (lower bottom); © Aleksandr Bryliaev/Shutterstock (lower left); Page 34: ©
Dmitrijs Mihejevs/Shutterstock (top); © altug/Shutterstock (left); © Nastya Pirieva/Shutterstock (right); Page 35: © DenisNata/Shutterstock (top); © Larry Malone/Lawrence Hall of
Science (bottom); Page 36: © iStockphoto/Olga Demchishina (top); © iStockphoto/ElementalImaging (bottom); Page 37: © Steve Maslowski/Visuals Unlimited, Inc.; Page 38: ©
Breck Kent/Animals Animals; Page 39: © A. Cosmos Blank/Photo Researchers, Inc.; Page 40: © Dmitrijs Mihejevs/Shutterstock (top); © Oshchepkov Dmitry/Shutterstock (bottom);
Page 41: © Dmitrijs Mihejevs/Shutterstock; Page 42: © Crystal Kirk/Shutterstock (left); © Lynsey Allan/Shutterstock (top right); © Jayne Chapman/Shutterstock (bottom right);
Page 43: © iStockphoto/Luís Fernando Curci Chavier (left); © Jason Mintzer/Shutterstock (middle); © Tyler Fox/Shutterstock (right); Page 44: © iStockphoto/craftvision (top left); ©
Paul Yates/Shutterstock (bottom left); © Vishnevskiy Vasily/Shutterstock (middle); © Christian Musat/Shutterstock (right); Page 45: © Steven Hunt/Getty Images (top); © Jean
Laurent Tari/Shutterstock (bottom); Page 46: © Mike Price/Shutterstock (top left); © Dan Bannister/Shutterstock (bottom left); © Diana Cochran Johnson/Shutterstock (right);
Page 47: © straga/Shutterstock (top); © iliuta goean/Shutterstock (bottom); Page 48: © Mircea BEZERGHEANU/Shutterstock (top); © rSnapshotPhotos/Shutterstock (bottom);
Page 49: © vicspacewalker/Shutterstock; Page 50: © Bryan Rentoul/Shutterstock; © Suzanne Tucker/Shutterstock (inset); Page 51: © iStockphoto/matt Matthews (top); ©
TommyBrison/Shutterstock (bottom); Page 52: © iStockphoto/Clint Faile (top); © Mary Terriberry/Shutterstock (bottom); Page 53: © Paul B. Moore/Shutterstock; Page 54: ©
iStockphoto/Laure Neish (top); © Nelson Sirlin/Shutterstock (bottom left); © iStockphoto/james leonardy (bottom right); Page 55: © iStockphoto/peter zelei (top); © nialat/
Shutterstock (bottom left); © artcphotos/Shutterstock (bottom right); Page 56: © jadimages/Shutterstock (top); © James M Phelps, Jr/Shutterstock (bottom); Page 57: ©
2009fotofriends/Shutterstock (top); © iStockphoto/Frank Leung (bottom); Page 58: © Jeff Banke/Shutterstock (top left); © Peter Kirillov/Shutterstock (top right); © André
Gonçalves/Shutterstock (bottom); Page 59: © TTphoto/Shutterstock (top); © Sam Chadwick/Shutterstock (bottom left); © Jack Cronkhite/Shutterstock (bottom right); Page 60: ©
Anna Jurkovska/Shutterstock (top); © iStockphoto/Dieter Hawlan (bottom); © Peter Zaharov/Shutterstock (bottom inset); Page 61: © PBorowka/Shutterstock; © DJ Mattaar/
Shutterstock (inset); Page 62: © Ian Scott/Shutterstock (top left); © Baloncici/Shutterstock (top right); © iStockphoto/Dale Walsh (bottom); Page 63: © Dmitrijs Mihejevs/
Shutterstock (top); © drsuth48/Shutterstock (bottom); Page 64: © altrendo images/Getty Images; © bmaki/Shutterstock (inset); Page 65: © iStockphoto/Island Effects (top); ©
Steven Trainoff Ph.D./Getty Images (bottom); Page 66: © Bruce Amos/Shutterstock; © iStockphoto/kawisign (inset); Page 67: © ppl/Shutterstock (left); © A. J. Gallant/Shutterstock
(right); Page 68: © David M. Schrader/Shutterstock; Page 69: © Moose Peterson
/ardea.co.uk; Page 70: © 2010 Photos.com, a division of Getty Images (top); © Andrejs Pidjass/
Shutterstock (bottom); Page 71: © Joy Fera/Shutterstock (left); © Lorraine Logan/Shutterstock (right); Page 72: © Jacob Hamblin/Shutterstock (grasshopper); © vladislav susoy/
Shutterstock (frog); © Stephen Mcsweeny/Shutterstock (hawk); © Maksym Protsenko/Shutterstock (grass); Page 73: © zhuda/Shutterstock; Page 74: © iStockphoto/Catherine
Yeulet (top); © Jennifer Morris (bottom); Page 75: © Philipp Nicolai/Shutterstock; Page 76: © Scott MacNeill (top); © Sebastian Kaulitzki/Shutterstock (bottom); Page 77: ©
LifeART and MediCLIP images © 2000 Lippincott Williams & Williams; Page 78: © Joel Blit/Shutterstock; Page 79: © Dr. Morley Read/Shutterstock (top); © guentermanaus/
Shutterstock (left); © This World Photography/Shutterstock (right); Page 80: © Rebecca Terry, University of Chicago; Page 81: © Francois Gohier/Photo Researchers, Inc. (top); ©
alice-photo/Shutterstock (bottom); Page 82: © Hedydebats/Dreamstime.com (top); © Michael Gray/Photos.com (bottom); © Francois Gohier/Photo Researchers, Inc. (right); Page
83: © iStockphoto/Jim Jurica (top); © iStockphoto/Arpad Benedek (top inset); © Volker Steger/Photo Researchers, Inc. (left); © Kim Steele/
www.fotosearch.com(right); Page 84: ©
Jacquelyn Lachance/Delta Education (top); © Damian Palus/Shutterstock (bottom); Page 85: © leonello calvetti/Shutterstock (top left); © Irina oxilixo Danilova/Shutterstock (top
right); © Ralf Juergen Kraft/Shutterstock (bottom left); © Eric Isselee/Shutterstock (bottom right); Page 86: © iStockphoto/mark Higgins (top); © Claude Gariepy/Shutterstock
(bottom); Page 87: © iStockphoto/microgen (top); © Dinoton/Shutterstock (bottom); Page 88: © iStockphoto/Stephen Martin (shrimp); © 24Novembers/Shutterstock (fern); ©
Ann Baldwin/Shutterstock (ammonite); © cosma/Shutterstock (lizard); Page 89: © Audrey Snider-Bell/Shutterstock (scorpion); © FikMik/Shutterstock (tarantula); © Angel Simon/
Shutterstock (clam); © gjfoto/Shutterstock (crab); Page 90: © Cathy Keifer/Shutterstock; © Michael Pettigrew/Shutterstock (inset); Page 91: © Volodymyr Burdiak/Shutterstock
(left); © Zurijeta/Shutterstock (middle); © Apollofoto/Shutterstock (right); Page 92: © Pete Donofrio/Shutterstock (top); © TSpider/Shutterstock (left); © Amy Myers/Shutterstock
(right); Page 93: © skyhawk/Shutterstock; Page 94: © Monkey Business Images/Shutterstock; Page 95: © Sebastian Kaulitzki/Shutterstock (top left); © LifeART and MediCLIP
images © 2000 Lippincott Williams & Williams (top right); © Petar Lazovic/Shutterstock (bottom left); © LifeART and MediCLIP images © 2000 Lippincott Williams & Williams
(bottom right); Page 96: © LifeART and MediCLIP images © 2000 Lippincott Williams & Williams (top); © iStockphoto/Roberto A Sanchez (bottom); Page 97: © Shawn Pecor/
Shutterstock (top); © ss_serg/Shutterstock (bottom); Page 98: © Jennifer Morris; Page 99: © pzAxe/Shutterstock (top); © prism68/Shutterstock (bottom); Page 100: © Anton Prado
PHOTO/Shutterstock (top); © Undergroundarts.
co.uk/Shutterstock(bottom); Page 101: © kilukilu/Shutterstock (left); © iStockphoto/Ana Abejon (right); Page 102: © iStockphoto/
Peter Kim (top); © iStockphoto/Sally Carns Gulde (bottom left); © iStockphoto/Plus (bottom right); Page 103: © iStockphoto/Brandon Alms (left); © iStockphoto/Peter Kim (right);
© iStockphoto/Henrik Jonsson (bottom); Pages 104–105: Lawrence Hall of Science, UC at Berkeley; Page 106: © Delta Education; Page 109: © Brian Lasenby/Shutterstock; Back
Cover: © Dan Bannister/Shutterstock.