7. which would conserve more energy, if all humans ate only vegetables or ate only meat? explain your
answer.

Where is the rest of the question

The short-term effect of tar on the body is increased blood pressure.

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