Describe how alimentary canal is adapted to food consumed by the animal

The first step to obtaining nutrition is ingestion, a process where food is taken in through the mouth and broken down by teeth and saliva.

Source: Boundless. “Ingestion.” Boundless Biology Boundless, 26 May. 2016. Retrieved 16 Mar. 2017 from https://www.boundless.com/biology/textbooks/boundless-biology-textbook/animal-nutrition-and-the-dige...

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.