
Microbiology: A Systems Approach 4th Edition by Marjorie Kelly Cowan
Edition 4ISBN: 978-0073402437
Microbiology: A Systems Approach 4th Edition by Marjorie Kelly Cowan
Edition 4ISBN: 978-0073402437 Exercise 47
Figure 21.2. Some doctors suggest that gently forcing one's ears to "pop" is an effective way to prevent ear infection. Use the following illustration to explain how this could work.
Figure 21.2. An infected middle ear.

Figure 21.2. An infected middle ear.

Explanation
Sometimes your ears can make a popping s...
Microbiology: A Systems Approach 4th Edition by Marjorie Kelly Cowan
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