The nordic countries share all of the following characteristics except a. a viking heritage. b. similar terrain. c. the same religion. d. mixed economies and democratic systems.

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