Biology 2010 Student Edition

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

Chapter 3, the Biosphere - Assessment - 3.2, Energy, Producers, and Consumers - Understand Key Concepts/Think Critically - Page 90,: 10



Work Step by Step

Option a. is incorrect. A consumer, by nature, eats other things. Therefore, consumers cannot get their energy directly from the sun. Option b. is incorrect. Only first-level consumers eat primary producers such as grass. Option c. is incorrect. Chemoautotrophs get their energy from inorganic chemicals. Option d. is correct. Consumers must meet their energy needs by either eating organisms that are alive or those that used to be alive.
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