Not 100% sure but I think it is
132 + 39 = 171
B = 90 degrees
171 + 90 = 261
180 + 180 = 360
C = 99
Answer:
True
Explanation:
The fourth methods outlined in the paragraph are useful to determine the nature of the differences between the geology of northern and southern Arizona.
This is because these geology differences can manifest in seismic profiles, in geologic history (for example, the differences in the rock formations that form the soil of the two regions), in drill core studies, and also, in a detailed map of the geology of the state, where ideally, the results from the previous studies would be mapped.
Settlements were nesr water. All people need water to survive, and so settlements needed to be near enough to water to allow survival.