How is the skeleton of a frog different from a fish

How is france’s culture important to its economy

Why did the people of kamchatka oppose a mining project there

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