Who plays sas 4 during 2020

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

Which of the following is the unit of measurement used to describe the severity of an earth quake?

This is europe’s major mountain tang it contains some of europe’s tallest peaks