How does poverty affect canadians? does it affect all canadians? indigenous? provincial discrepancies?

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.

Can someone me? i need to have this done as soon as possible! i'm putting 20 points on this!

The meseta in spain is a a. navigable river b. castle c. coastal plain d.plateau