European opposition to immigration primarily relates to a) unauthorized immigration.
b) increased cultural diversity.
c) insufficient natural resources.
d) rapid overpopulation and crowding.
e) the expansion of crime and unemployment.

The images show two different fronts.which fronts are shown? item a shows a cold front, and item b shows a warm front.item a shows an occluded front, and item b shows a cold front.item a shows a warm front, and item b shows a stationary front.item a shows a stationary front, and item b shows an occluded front.