Answer:
The force of surface tension in the lungs is so great that without something to reduce the surface tension, the airways would collapse after exhalation, making re-inflation during inhalation much more difficult and less effective. Collapse of the lungs is called alectasis.
Explanation:
It is cow chicken pig poop
Answer:
Heredity
Explanation:
the passing on of physical or mental characteristics genetically from one generation to another
