Chickens express three variations for feather color: white, black, and black and white speckled. The genotypes are below: WW = white
BB = black
WB or BW = black and white speckled

Which conclusions about these two traits are valid?

Ithink the answer is 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

D. peatlands,grassland,swamps