What areas are the most populated parts of russia

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

Fossil fuels such as coal, oil, and natural gas were formed over millions of years by

Acanyon on the ocean floor at which the crust bends downward is called a(n)