Since starting to learn about feedback loops in this class, do you feel that you can apply it to other scenarios outside of what you have learned about in Earth Science? Ex) Body temperature control, food webs...etc?

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