There are monuments in Luxor, Egypt with writing that has remained visible for over 3500 years, but when the same ruins are sent to New York as a gift from the government of Egypt, the writing is quickly is worn away and is no longer legible. All in all, the rate of chemical weathering is controlled by the surface environment, grain size, and the climate. Rivers, especially fast-moving rivers, erodes the land by carrying sediment away from one location and depositing it in another. Deltas are formed where running water moves into standing water. The Missouri River Valley has been formed by this slow-moving erosional force.
Tributaries are bodies of water, which flow into a larger river.
Fluvial landscape' is the landscape formed by rivers. Rivers, at a certain stage of development, move back and forth in a snake-like pattern causing erosion and deposition. This may cause the river to become so tightly curved that the river may take a short-cut across the corners and create a loop or an oxbow lake. An oxbow lake is the explanation for the creation of Lake Manawa and Carter Lake. Waves are formed when wind blows over calm waters and ripples are created.