Weathered debris in deserts consist mainly of what.

What would have happened to portugal’s trade if they had not found a way to sail around the tip of africa

The earth rotates on its axis and revolves around the sun every

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