As individuals progress through adolescence, their sense of identity
positive
consistent.

where's the

~kinetic ~potential

explanation:

kinetic and potential energies would be types of mechanical energies.

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.