Biopsychologists who study the physiological correlates of psychological processes by recording physiological signals from the surface of the human body are often referred to as psychophysiologists.
1949; The Organization of Behavior written by D.O. Hebb; played a key role in biopsychology's emergence as a major neuroscientific discipline; provided a formalized outline of how brain physiology could explain behaviors.
Neurons are the cells that receive and transmit electrochemical signals.
Psychology is the the scientific study of behavior (all overt activities of the organism as well as all the internal processes that are presumed to underlie them).
Comparative Psychology is the study of the evolution, genetics, and adaptiveness of behavior, largely through the use of the comparative method
A heterogeneous mixture composes of non- uniform components, so the concrete would be the answer, because you can tell the components from one another.
