Social epidemiology is the study of the biological basis of disease. the availability of doctors around the world. the age at which people die. the distribution of health and illness in a population.

6.3%

explanation:

the acceptance rate for yale university is 6.3%. this means that only 6 percent of people who apply actually get accepted!

good question. i'll be looking into that. (this is a joke sir)

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.

answer; formal diagnosis (vera wand formal dress);