The tendency for slowly degradable or non-degradable substances to become more concentrated in the tissues of organisms at the top of the food web is termed biomagnification.
Biomagnification, or biological magnification, is the increasing buildup of poisonous materials inside organisms that occurs at each stage of the meal chain.
Biomagnification is defined as the buildup of a particular food web substance in the body of the organisms at exclusive trophic levels of a food chain. One example of biomagnification is the buildup of insecticide DDT which receives collected in zooplanktons. Small fishes devour those zooplanktons.
Biomagnification occurs in all ecosystems and metal chains. In aquatic ecosystems, toxins get consumed by way of smaller species like zooplankton, which are in turn eaten up by smaller fishes. The pollutants then journey through large fishes and to humans and birds, in one of these manners that it affects every trophic level.
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