The moon's phase is waning when it changes from a. first quarter to a full moon b. last quarter to a new moon. c. first quarter to a new moon.

Silicon is cut into tiny pieces for computer chipslead is melted to form pelletsliquid water freezes to form ice

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

C. a mature ovule of a plant.