Many features in Minnesota's landscape, such as most lakes, hills, and ridges, were formed by glacial activity. The wearing away of the surface is called erosion. Erosion constantly attacks the land by wind, water, frost, and temperature changes. Our land is being eroded and changed everyday. We see dust in the air.
Streams have muddy water.
Potholes appear in our streets. These are all signs of erosion. All rights reserved.