Comments
This teacher came up with a clever idea 4 comments
guest
· 6 years ago
I learned how to do this just last semester! :)
Well he has a point. 7 comments
Stones getting shaped by the ocean, very beautiful 9 comments
guest
· 6 years ago
It's actually from when people throw bottles in the water and the broken glass is smoothed from the motion of the water! Though the volcanoes thing sounds really cool.
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