If the mucus in the air track of mammals dry up and the hairs in...
BIOLOGY
WAEC 2006
If the mucus in the air track of mammals dry up and the hairs in the nostrils are removed
- A. impure air would be breathed into their lungs
- B. the speed of air movement into their lungs would increase
- C. breathing air into their lungs would be difficult
- D. more air would be taken into their lungs
Correct Answer: A. impure air would be breathed into their lungs
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