by experimenting the layers of the earth
Anatomy: the study of body placement
Physiology: the study of how the body functions
Differ: How it functions vs. where something is located
Body waves are two types: compressional or primary (P) waves and shear or secondary (S) waves. P- and S- waves are called “body waves” because they can travel through the interior of a body such as Earth’s inner layers, from the focus of an earthquake to distant points on the surface.
