Why there is an increase in the rate of erosion in the river after rejuvenation​

How did geography influence the development of ancient greece?

Why does sweden and norway have steep roofs

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