Question: This chart shows the PCB concentrations found at the various trophic levels in the Saginaw Bay ecosystem of Lake Huron. What is the best description

This chart shows the PCB concentrations found at the various trophic levels in the Saginaw Bay ecosystem of Lake Huron. What is the best description of this phenomena? 5 Walleye 4- Rainbow Smelt 3 Total PCB (ug/g, dry weight) Yellow Perch 2 Alewife White Sucker 1 -Phytoplankton Amphipod Zebra Mussel 6 8 10 12 14 16 15N enrichment

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