Mark is a biologist, he believes that the consistent consumption of limited planetary resources in pursuit of an improved quality of life is a flawed model, why is the model flawed?

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it