Biology 2010 Student Edition

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

Chapter 1, The Science of Biology - Assessment - 1.3 Studying Life - Understand Key Concepts/Think Critically - Page 29: 24

Answer

d.

Work Step by Step

All organisms must keep their internal conditions relatively constant. This dynamic process is called homeostasis. When certain conditions such as blood oxygen level deviate from a certain set point, the body initiates actions that bring those conditions back to the set point.
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