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Name: Amy Li
Status: student
Age:  30s
Location: N/A
Country: N/A
Date: 5/22/2003

In order for an oyster to make a pearl, a piece of sand or rock must get inside its shell. This causes the mantle to secrete a shiny smooth coating on it. Of what advantage might this process be to the oyster?

It walls off the offending irritant...our bodies do much the same with irritating bodies with which we cannot rid ourselves of.

Peter F.

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