Answer
The cat drops molecules and atoms on the ground. Some of these mix with the air and later enter the dog’s nose.
Conceptual Physics (12th Edition)
by Hewitt, Paul G.
Published by
Addison-Wesley
ISBN 10:
0321909100
ISBN 13:
978-0-32190-910-7
Chapter 11 - Think and Discuss - Page 225: 60
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