The term for the accumulation of toxins in living organisms is biomagnification or bioaccumulation. This process occurs when lower trophic level organisms absorb toxins from their environment at a higher rate than they can eliminate them. As toxins move up the food chain through predation, their concentrations increase, causing harmful effects on higher-level consumers, including humans. Substances like heavy metals and certain pesticides are notorious for biomagnifying, leading to serious health implications and environmental concerns. Understanding biomagnification is essential for managing and protecting ecosystems.