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it would be a big help.

2007-02-28 09:56:20 · 2 answers · asked by Lina 2 in Science & Mathematics Earth Sciences & Geology

2 answers

Natural: impact craters from meteors, volcano rims, iris of eye.

Man-made: ice skating rinks, wheels, sugar cookies.

2007-02-28 10:01:06 · answer #1 · answered by Jerry P 6 · 0 1

natural. drops of water. eyballs skulls

man made. ball bearings. marbles. globes.

2007-02-28 18:05:14 · answer #2 · answered by Anonymous · 0 0

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