I would say that the Rocky Mts were the youngest of all these mountain ranges as they were created between 80-55 million years ago during the Laramide Orogeny and also they are generally much taller than the other mountain ranges mentioned here which is a characteristic of young mountain ranges and their features are sharper as they haven't been eroded the way most of these others have so have been subject to erosion for less time than the others.
-cantidad de muertes anuales (causas naturales) -cantidad de muertes anuales (causas no naturales) -cantidad de inmigrantes anuales -cantidad de emigrantes anuales
The glacier's weight that is combined with the gradual movement, can alter and reforms the landscape over hundreds the thousands of the years. The ice then erodes the land surface and this can break the rocks and the soil debris far from their original places, resulting in various glacial landforms.
The Glaciers retreat also leads to the rise of the large sets of the sediments that are being deposited when the terminal extends as far down valley as it previously did. The Glaciers retreat as the ice melts more quickly than snowfall can accumulate and thus form the new glacial ice.
