Physical processes such as erosion, weathering, and tectonic activity can all contribute to the formation of lowland landscapes. Erosion is the process by which rocks and soils are worn away by the action of water, wind, and ice. This can create valleys, canyons, and other low-lying areas. Weathering is the process by which rocks are broken down by exposure to the elements, such as temperature changes, precipitation, and the effects of plants and animals. This can also create low-lying landscapes, as well as other features like cliffs and caves. Tectonic activity, which includes the movement of the Earth's crust, can also play a role in the formation of lowland landscapes by creating mountains and valleys.