Answer
Alternative
d)
Work Step by Step
The function of the cilia is to sweep away mucus and protect the lung from potentially infectious organisms
Campbell Biology: Concepts & Connections (9th Edition)
by Taylor, Martha R.; Simon, Eric J.; Dickey, Jean L.; Hogan, Kelly A.; Reece, Jane B.
Published by
Pearson
ISBN 10:
0-13429-601-X
ISBN 13:
978-0-13429-601-2
Chapter 22 - Review - Page 469: 7
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