which area on the map has been identified by scientists as having the worst air quality in europe in the early 21st century?
a) 1
b) 2
c) 3
d) 4

C) 3

Explanation:

Western Germany and Belgium, marked by the number 3 on the map, has some of the highest air pollution levels in Europe. The area, once the site of tensions in World War II and the Cold War, now faces environmental problems with enormous and long-lasting effects.

niger

explanation:

bc its the main river

answer is  

loa ≅ lma

to prove that the triangles are congruent using the aas congruence