Some people think that rivers form canyons, but in fact, the canyons form the rivers
because they form a natural barrier
The four major rivers are an important factor in the lives of the people of Africa. The rivers are a source of food in the form of fish. The rivers are also used in agriculture or farming as the water can be used for irrigation or quenching the thirst of domestic animals.
Zambezi River
Tiete , e Pinheiros
Sinkholes and lost rivers may form in regions that have limestone or other soluble bedrock because groundwater can dissolve these materials over time. This process creates underground voids and caverns; when the surface cannot support its weight, it collapses, leading to sinkholes. Additionally, lost rivers occur when surface water is diverted into these underground channels, often disappearing from sight. These features are characteristic of karst topography, where the landscape is shaped by the dissolution of soluble rocks.
by under ground
The submarne canyon is very steep-sidded.
Canyons are found in many deserts around the world.
Canyons typically form through the process of erosion by water, wind, or ice in areas with resistant rock formations. They are often found in mountainous regions, arid environments, and along rivers and coasts where the land is exposed to erosive forces over long periods of time.
Water gaps are formed when rivers erode through a mountain range, creating a gap or pass. Canyons are typically formed by the erosion of rivers or glaciers cutting through rock layers over time. Valleys can be formed by various geological processes, including erosion by rivers, glaciers, or tectonic activity.
canyons
steep canyons can form when down cutting is slow or fast
Canyons are not built by constructive processes, but rather by erosional processes such as the gradual wearing down of rock by water and wind. Canyons form when rivers cut through and erode the surrounding land, creating deep valleys with steep sides.
the grannd canyons
wind cannot form canyons but it can shape an carve through them.
the grannd canyons
The number of cars allowed around the area has been limited to help with pollution.