Answer
Aquatic animals with gills actively pump water through the gills to ensure efficient diffusion of gases and to maintain the required concentration of oxygen and CO2.
Work Step by Step
As above
Biology 2010 Student Edition
by Miller, Kenneth R.; Levine, Joseph S.
Published by
Prentice Hall
ISBN 10:
9780133669510
ISBN 13:
978-0-13366-951-0
Chapter 27, Animal Systems I - 27.2 - Respiration - 27.2 Assessment - Page 790: 2b
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