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SCIE 131
Assignment 4-1
The Zebra Mussel (Dreissena polymorpha) is a mollusk native to an area in the Ukraine and Russia near the Black Sea and the Caspian Sea. In the 1700's and 1800's canals were built around the seas and into Europe to make shipping easier. Theses canals also allowed the Zebra Mussel to expand into new areas. It appears that in 1985 or 1986 the Zebra Mussel had been introduced to the…