Because millions of years ago they were a lot bigger.
It's hard to say. The tallest are the youngest because they have not eroded down yet, but this not make short mountains old either. There were mountains in flat places millions or even billions of years ago.
Mm
New mountains are created through tectonic and volcanic activity.
The lithosperic plates keep pushing up. New mountains are created through tectonic and volcanic activity.
What we see today is the "Skeleton" of the mountains that once were. New mountains are constantly being formed through the action of tectonic action and volcanic action.
They inferred that the Appalachian Mountains have been eroding for millions of years.
It's hard to say. The tallest are the youngest because they have not eroded down yet, but this not make short mountains old either. There were mountains in flat places millions or even billions of years ago.
Mm
New mountains are created through tectonic and volcanic activity.
The Ozark Mountains are hundreds of millions of years old.
no it is rock thet has been eroded over millions of years to form CHOCOLATE
New mountains are created through tectonic and volcanic activity.
The lithosperic plates keep pushing up. New mountains are created through tectonic and volcanic activity.
Not quick at all 10s of millions of years
Mountains yes, volcanoes no.
Depends what the agents of erosion are. For example: If it was ice, the area would be scoured clean. If it were water or wind, the eroded material may have been carried off, leaving only the eroded surface.
What we see today is the "Skeleton" of the mountains that once were. New mountains are constantly being formed through the action of tectonic action and volcanic action.