What effect would a barrier island have on shoreline of the mainland?

An earthquake’s epicenter can be determined from arrival time data recorded on a(

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.

Which modern technology has not made a great difference in the inuit way of life?