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1. how might differences in latitude be related to differences in surface temperature at a given time of year?
2. what effect does the time of day have on the rate at which sunlight heats an area of the earth's surface? explain your answer.

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