If the mucus in the air track of mammals dry up... - WAEC Biology 2006 Question
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 option: a
Please share this, thanks:
Add your answer
No responses