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©2016 by Mason Crest, an imprint of National Highlights, Inc. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, taping, or any information storage and retrieval system, without permission from the publisher. Printed and bound in the United States of America. First printing 1 3 5 7 9 8 6 4 2 Library of Congress Cataloging-in-Publication Data The science of life. pages cm. — (Science fundamentals) Includes bibliographical references and index. ISBN 978-1-4222-3514-0 (hc) — ISBN 978-1-4222-8334-9 (ebook) 1. Life (Biology)—Juvenile literature. 2. Life—Origin--Juvenile literature. 3. Evolution—Juvenile literature. 4. Genetics—Juvenile literature. QH309.2.S35 2017 576—dc23 2015035339 Science Fundamentals Series ISBN: 978-1-4222-3512-6

SCIENCE FUNDAMENTALS

THE SCIENCE OF ENERGY THE SCIENCE OF LIFE THE SCIENCE OF SPACE THE SCIENCE OF TIME PICTURE CREDITS

Page: 4, 5, 6, 12, 13, 28, 31, 32, 33, 35, 36: Used under license from Shutterstock, Inc.; 4: Natykach Nataliia/Shutterstock.com; 9: National Aeronautics and Space Administration; 10, 41: Library of Congress; 11: Brian Maudsley/Shutterstock.com; 12: Krivosheev Vitaly/Shutterstock.com; 16, 17, 19, 20, 24, 25, 26, 27, 33: Wellcome Library, London; 18: Everett Historical; 28: Science Museum, London; 37: Thomas Hunt Morgan, A Critique of the Theory of Evolution (1916), p. 74.; 42: Sebastian Kaulitzki/Shutterstock.com; 44: Designua/Shutterstock.com Vector Illustrations: 7, 15, 21, 23, 30, 34, 39, 45: rzarek/Shutterstock.com Background Images: 3, 7: Tomislav Forgo/Shutterstock.com; 5: Natykach Nataliia/Shutterstock.com; 6, 36: Sergii Lesik/Shutterstock.com; 9, 13, 17, 27, 33: cobalt88/Shutterstock.com; 10: getvitamin/Shutterstock.com; 15, 21: Digital_Art/Shutterstock.com; 19, 25, 35, 47: marivlada/Shutterstock.com; 23, 41, 43: Ruslan Gi/Shutterstock.com; 29, 30: microvector/Shutterstock.com; 39: SARANS/Shutterstock.com