We often refer to the super-
continent as Pangaea, but
what term did Alfred Wegener
use?

Based on the information in the graph, what can you conclude about humans in the world in general?

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

Sink holes may eventually for to join a. wide valleys b. zone of aeration c. dripstones d. aquifer