36,Desicrbe three uses of the tree structure as a way of organizing informattion that you are familiar with.

37, some aspect of each of the following can be modeled with a graph structure. Describe, in each case, what the nodes would represent and what the edges would represent.

A, travel routes available through an airline

B, countries and their borders

C, a collection of research articles about data structure.

D, actors(research the sis degrees of kevin bacon)

E, the computers at university.

F, the web