When populations of two species work together to obtain resources, they are OA
competing
ОВ.
cooperating
OC
pioneering
OD
arguing

idk but if i had to take an educated guess i’d say a c d

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