Place the following plant groups in sequence from the first to most recent appearance in the fossil record. a. gymnosperms b. mosses c. angiosperms d. ferns

Ithink a saturated phospholipid

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