Which of the following mountain ranges found in the united states is highly eroded? 1. rocky mountains2. sierra  nevada range3. cascade mountains4. appalachian mountains

The answer is 4) Appalachian Mountains. 

All the mountain ranges listed have, of course, experienced a certain level of erosion. However, the Appalachian range is the most heavily eroded. It was once almost as high as the Rocky Mountains, which has an elevation of 4,000 meters, but erosion has brought its elevation down to around 2,000. 

Master planned communities outside of chicago. note: population density means people living in an area per square mile. chicago, an urban and highly populated area has a much more higher density than a desert, amish community, settlement, or nomadic region.

Answer (d) may increase or decrease porosity through dissolution or deposition;