Phy Studies How much water was produced for the city of Dubai each day in 2009 using the desalination process?
A. 1 million gallons
B. 4 million gallons
C. 40 million gallons
D. 400 million gallons

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.