Answers

2014-12-01T15:10:11+05:30
Studies have shown that it takes about 100 years to produce 1cm. of sand. 
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well how can you say that.?? can you tell me who did the study?
2014-12-02T18:22:10+05:30
In the middle of the deep ocean about 100 million years. In the local fast running river about 1 week. On the beach depends on to many factors. 
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