Quote:
Lake Biwa became so polluted, however, that all the farms have closed.
There is a new lake, however, that is producing pearls. It is called Kasumigaura. These pearls are typically large, and quite round. Most of them are pink. They are nice pearls, but very, very expensive.
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Just Curious, what was the cause of the the pollution in Lake Biwa and is Lake Kasumigaura succeptable to the same problems?