The process of upwelling magma at divergent boundaries, with subsequent movement away from those boundaries, and the return flow of cooled rock deep into the mantle, forming cycles of slowly moving rock may be explained by:

Compare demographic and environmental effects of the columbian

Solve for r in the formula v = ir, when i = 5 and v = 15.

What did the pattern of earthquakes in the wadati-benioff seafloor zones show scientists? a.) earthquakes occur where the ocean floor reaches its highest temperatures. b.) many earthquakes take place 700 kilometers below the seafloor. c.) slabs of ocean floor return to the mantle in subduction zones. d.) ocean - trenches cause earthquakes.