1.

Collect information about how a natural pearl is formed.

Answer»
  • Natural pearls form when an irritant- usually a parasite and not the proverbial grain of sand – works its way into an oyster, mussel, or clam.
  • As a defense mechanism, a fluid is used to coat the irritant.
  • Layer upon layer of this coating called ‘nacre’ is deposited until a pearl is formed.


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