Since the crust floats on top of liquid and flowing upper mantle, what inference can be made about the density of the two layers?

What group addressed the issue of slavery in the election of 1848 by opposing slavery in new territiories

Russia is to the east if germany ? true or false

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks