Because the rib muscles and diaphragm contract,increasing the lung volume
Fracture is bone getting broken. Common fracture for seniors is hip fracture.
For cells that are larger, nutrient intake and waste elimination takes a longer time due to the larger distance that must be covered by the same transport processes as the ones taking place in smaller cells. Shapes that maximize surface area help increase the rate of nutrient uptake and waste elimination.
C. Some waves travel as transverse waves, but there are also longitudinal waves.