What is a structure that some single-celled organisms have in order to move?
-arms
-tails
-cilia

Yur787878787878787878787878787878

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

Just dont put scarce