Rapids
It is known as rapids - a length of the river where rocks break the surface and the water is churned into what is known as white water.
Because over the years the water erodes the rocks that the water fall flows over therefore the falls are moving backwards!
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A simple example is: rain water (fresh water) flows towards the sea, dissolving chemicals out of the rocks and soil it flows over. This slightly chemical solution enters the sea. As water evaporates from the sea, so the chemicals are left behind, so causing the saltiness of sea water. Obviously, such a change can only occur over an extremely long time.
Most rocks are very hard and brittle. When they break they shatter. Rocks that are found along the shore line of the ocean and rocks that are found in river bottoms are very smooth. The water, sand and dirt that constantly flows over them polishes them removing all rough edges.
If limestone is exhausted by dissolution and acidic neutralization, then more limestone can be added to the pond over the seep.
a spring whose water flows from a crack in the cap rock over the aquifer
when the water flows over earth materials the earth materials start to increase into a river and it will have lots and lots of meanders in there
Rocks in stream beds can become smooth due to a process called abrasion. As water flows over the rocks, it carries sediment and particles that constantly rub against the rocks, wearing them down and making them smooth over time. The friction caused by the movement of water and sediment helps polish the surface of the rocks.
the air flows thows thw water
The flow of water is continuous