Erosion: This is the primary force that removes sediment. Erosion can be caused by:
* Water: Rivers, streams, ocean currents, and even rain can carry away sediment. This is especially true in areas with steep slopes or loose soil.
* Wind: Strong winds can pick up and transport sand and dust, especially in dry areas.
* Ice: Glaciers can scrape away sediment as they move, and freeze-thaw cycles can break down rock and soil.
* Gravity: Landslides and rockfalls can move sediment downhill.
* Human activity: Construction, farming, and mining can all contribute to erosion by disturbing the soil.
Other factors:
* Biological activity: Plants can help stabilize soil, while burrowing animals can disrupt it.
* Chemical weathering: Chemical reactions can break down rocks and soil, making them more susceptible to erosion.
* Tectonic activity: Earthquakes and volcanic eruptions can create significant changes in the landscape, including the removal of sediment.
Important Note: The balance between deposition and erosion is a crucial factor in shaping the Earth's surface. Sediment deposition can create new landforms, while erosion can carve out canyons, valleys, and other features.
