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At a bottom of a lake, a river delta, an ocean, or similar location where further movement is restricted or slowed down.
Gravity, erosional forces, water transportation, ice transportation.
because of water
Sedimentary, Igneous, and/or Metamorphic
Not all rocks are jagged. However the evolution of the river is continuous and 'rocks' are being broken-off all the time by the water, erosion, weather etc. Of course as 'rocks' are moved along by the force of the water that can make them 'jagged'.
River rocks, because have smooth edges.
Wet rocks.
what is 1+1=2
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.
At a bottom of a lake, a river delta, an ocean, or similar location where further movement is restricted or slowed down.
Some feel smooth because it has been eroded away by the current of the water for a very, very long time. The more rough rocks have not been succumb to as much erosion, therefore it is not smooth yet.
River beds.
Gravity, erosional forces, water transportation, ice transportation.
because of water
rocks are there
wet ones
there isn't a specific shape. but they are most always smooth