The tendency of chemicals to become more concentrated as they move up the food chain is known as?

The tendency of chemicals to become more concentrated as they move up the food chain is known as biomagnification.

Biomagnification is particularly relevant within the Incident Command System (ICS) when managing environmental hazards during emergency responses. For instance, in a scenario involving a chemical spill affecting a water body, the ICS must consider not only the immediate containment and cleanup but also the long-term ecological impacts, such as biomagnification in aquatic food chains. This requires collaboration between environmental specialists and other ICS roles to assess and mitigate risks to both wildlife and human populations who may rely on these ecosystems for food.

Source: https://training.fema.gov/is/courseoverview.aspx?code=is-5.a&lang=en