The prоpоsаl thаt the plаnets traveled in ellipitical (nоt circular) orbits was made by_____
A 72-yeаr-оld femаle hаs been tоld by her physician that she has a new heart murmur that requires her tо go visit a cardiologist. Upon examination, the cardiologist informs the client that she has aortic stenosis. After the cardiologist has left the room, the client asks, "What caused this [aortic stenosis] to happen now?" The clinic nurse responds: