Classical conditioning involves while operant conditioning involves

Classical conditioning involves behavior that is elicited by a stimulus while operant conditioning involves behavior that is emitted by an organism. Classical conditioning is a learning method wherein a potent stimulus is being paired with a neutral stimulus. It is when you relate two stimulus that are different. Operant conditioning, on the other hand, is learning that involves behavior being controlled by the consequences with it. 

Fixing the errors and resubmitting it

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.