The correct answer is option ''The stethoscope was invented because the physician did not want to put his head on women's chests to listen to their heart and lungs''.
In this case, the problem was that the physician's had a problem in listening the heart beats and the lung sound of the woman. To overcome this problem, the stethoscope was invented to listen the heart beat and the lung sound from distance, without keeping head on women's chest.
Water.
Sound travels slowly because the amount of pressure.
monosaccharides, disaccharides, polysaccharides
4-Growth, maintenance, balance fluids, maintain proper hp
2-Actin, collagen
