What is biomagnification primarily concerned with?

Biomagnification is primarily concerned with the increase of chemical concentrations in organisms, particularly as you move up the food chain. This phenomenon occurs when pollutants, such as heavy metals or persistent organic pollutants, are taken up by organisms at lower trophic levels. As these organisms are consumed by higher level predators, the concentration of these harmful substances increases significantly.

This is due to several factors, including the fact that many of these substances are not easily broken down or excreted by organisms. Hence, they accumulate over time within the tissues of the organisms, leading to higher concentrations in larger predators. As such, biomagnification highlights the ecological and health risks associated with pollutants in an ecosystem, especially concerning apex predators and humans who may consume them.