Environmental Consultant- you would have awareness of legislation and would know about collecting data and field surveys.
School Teacher- you could go on to teach geography at a secondary school.
Town Planner- can understand the different things that can effect towns, for example you would know what defenses to put in place.
I wonder if someone deleted there account or if they did.
The degree of vertex D is if it is an indegree or outdegree, it is 1 degree in vertex D.