What is the temperature scale used by most scientist

The main temperature scale used by scientists is Kelvin. If that isn't an option then put down Celcius.

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.