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George has been collecting rock from different places along the river. On one trip, he visited places near the source of the river, places a little farther away, and places very far away from the source. He forgot to label his rock samples. How would the rocks look at each source?
Located near the source: rough and jagged
A little farther away: broken down and a little smooth around the edges
Very far away: small and smooth
This is due to weathering.