What is the growth of population in cities and the resulting changes called? 4 points
A. industrialization
B. urbanization
C. revolution
D. migration

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted

The days of the “midnight sun,” when the sun never really sets at night, occur during what season?

What term describes the government positions that officials who passed the civil service exam became a part of?