What is primarily the scientific study of the morphology of the adult human body ?
Ecology – study of the interactions of living organisms with one another and with the non-living elements of their environment Environmental Biology – study of the natural world , as a whole or in a particular area , especially as affected by human activity Epidemiology – major component of public health research , studying factors affecting the health of populations Evolution – any change across successive generations in the heritable characteristics of biological populations .