Nothing time only changes when you move east or west.
I would choose D as they both have weather greatly effected by mountain ranges although A my seem like the answer some southern regions of the Midwest are very hot.
Answer:
Glacier Landforms: Trough. Glacial troughs, or glaciated valleys, are long, U-shaped valleys that were carved out by glaciers that have since receded or disappeared. Troughs tend to have flat valley floors and steep, straight sides. Fjords, such as those in Norway, are coastal troughs carved out by glaciers.
Or: Steep U shaped valleys that connect with the sea and fill with water when the glaciers melt. Now keep scrolling;)
Explanation:
the type of lava that is erupted and it's Viscosity
All mass isn't all together in one area but is actually more spread out.