Explain how the demonstration explains air takes up space, meaning air has volume.

Because they are stupid and insensitive

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

Idon’t know i’m just trying to get points to make me look smawt