Earth tones-- : the book : federal science for sustainable development earthtonesbookfe00cana Year: 2000 Health and Canadians Amphipod barometers for PCBs Department of Fisheries and Oceans In the cold, deep water of the Arctic Ocean swims a sentinel of the seas. Because of its scavenged diet of invertebrate, fish and marine mammal carcasses, its high proportion of fat (25 per cent of its body weight), and biomagnification between successive predator-prey links, Eurythenes gryllus has become a barometer for organic contaminants in the Arctic Ocean marine food web.

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