The belief that some races are superior or inferior to others. * racism
discrimination
diversity
stereotype

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; scientific method;

the first one you have to divide thenn add then multiply then add but mabey pemdaz pie equals 3.14 duuuhhh