Human first started setting up permanent homes during the ___. please answer this correctly pls pls A. paleolithic are

B. neolithic revolution

C. 4th century AD

D. nomadic period

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

Which layer surrounds the center of the earth? a: crust b: core c: mantle

Which characteristics of temperature and salinity have the greatest influence on the movement of deep-ocean currentsa. warm and low salinityb. cold and high salinityc. cold and low salinityd. warm and high salinity