One way landforms shift over time is by weathering. Weathering occurs as the powers of nature break down the rocks into smaller pieces. The weathering of water , ice and wind helped to create these natural arcs in Utah.
In dry areas, wind is a powerful cause of weathering and erosion. ... You learned how water changes Earth's surface through weathering, erosion, and deposition. Wind also causes these processes. This is especially true in dry, open areas where strong winds are common and a lot of rock is exposed.
they have moved closer together causing the land to collide more with the other side making the river smaller. It keeps the same shape just combined tighter.
