Is the accumulation of a chemical that breaks down slowly and it is concentraded in the organism. It can be hight enought to cause decrease or deat.
BIOMAGNIFICATION
Is the bioaccumulation of a substance in the food chain, cause by a transfer of residues of the substance in smaller organism that are food for larger organism in the chain.
Result in an organism having highter concentrations of a substance that is present in the organism`s food.