The bending of a seismic wave as it crosses a boundary is called

How does the release of trapped gases in magma cause a volcano to erupt? a. they push the magma up the pipe and then are reabsorbed into the magma chamber. b. they cause the magma to change chemically into lava. c. the gases form vents that allow the magma to flow out. d. the gases rush out and carry the magma with them.

In which layer do organisms on earth love?

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?