Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 3, The Biosphere - Assessment - 3.3 Energy Flow in Ecosystmes - Think Critically - Page 91: 16

Answer

primary producers

Work Step by Step

Primary producers are normally the organisms at the bottom or base of a food chain or web. These organisms take in inorganic matter by using energy from sunlight to make organic matter that can be used as food for them and for other organisms.
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