This model of Earth shows the locations of North and South America. When it is winter in North America, it is summer in South America. Explain the cause of this seasonal pattern.

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