Increase in concentration of DDT, PCB, and other slowly degradable, fat-soluble chemicals in organisms at successively higher levels. [Miller, Tyler G.; Living in the Environment: Principles, Connections, and Solutions, (1996) Wadsworth Publishing, New York.] [Bioresource Technology; v98; 2178-2183; 2007.] [Critical Reviews in Toxicology; v34; 301-333; 2004.] [FEMS Microbiology Reviews; v11; 297-316; 1993.]