The following diagram shows the thickness of the walls of the traditional houses in Asia and Europe, the reason for this change is ( ) A. the difficulty of obtaining building materials program

Test Question Analysis: Asia and Europe since the Atlantic coast to the Pacific coast climate from the oceanic transition to continental, the wall thickness of the dwellings shown in the figure from west to east is getting thicker and thicker, the reason for this change is the temperature, the walls are thick, in favor of the cold.