The fertile crescent stretches across the top of which of the following deserts? the saharan desertthe nubian desertthe persian desertthe syrian desert

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