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it runs over rock/sand/dirt and removes little pieces know as erosion
their is not water under the sand on a beach. If there was the beach would collapse.
The product of weathering and erosion.
A beach is usually a place where there is sand and a water source. Many people build sand structures at the beach using the sand and water from ocean or lake and make sand castles.
Undertow causes the sand to be removed from the beach and carried back out into the water.
It removes all the particles from the water so yes
The sand was diamonds, glistening in the bright sun.
weathering
Sand and water.
Sand, water.
There is sand, water, rocks
Weathering like wind, water, or plants break down the rock turning it to sand!