An animal dies in mud, decomposes, and leaves an imprint, which is later filled by sediment to form a solid copy of the original organism. How is this fossil different from fossils of preserved remains?

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