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Home Q & A Board Biology-Related Homework Help General Biology
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linhhh linhhh
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4 years ago
According to this figure, which organisms have the highest concentration of PCBs, and why?



▸ phytoplankton, because they are at the bottom of the food chain

▸ smelt, because they are in the middle of the food chain

▸ herring gulls, because they are at the top of the food chain

▸ herring gulls, because they are at the bottom of the food chain
Textbook 
Campbell Biology: Concepts and Connections

Campbell Biology: Concepts and Connections


Edition: 8th
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Brittany08196Brittany08196
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linhhh Author
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4 years ago
Thank you for answering so quickly
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