PLEASE HELP I FEEL ASLEEP IN CLASS!!

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.

Soil is made of air water organic material minerals weathered rock

After world war i, how did the us economy compare to that of germany?