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bazaltina [42]
3 years ago
8

Why were the rocks on the river bed smooth?

Biology
2 answers:
notsponge [240]3 years ago
8 0

because the water runs over them that, then makes them smooth.
JulijaS [17]3 years ago
4 0
The answer is actually the third one with the rushing water. The continuous flow of water down the stream gradually eroded away jagged parts of the rocks; this phenomena is actually what created the grand canyon. Over a long period of time, the flow of water can make lasting changes. 
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