What are the columns and rows of the periodic talbe of the elements called

Where does the availability of water pose the greatest problem

What do the capital cities of lebanon, kuwait, qatar, united arab emirates, and oman have in common? they are all inland cities. they are all coastal cities. they are all have “stan” in their names.

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.