The concentration of toxic chemicals as it progresses through the food web.

 Biomagnification, each level of the food chain has a greater concentration of contaminant. Biomagnification is the process by which toxic chemicals build up within predators

Explanation:

increases

Explanation:

According the biomagnification phenomenon when the toxic chemical enters in the food web in the form of chemical insecticide or pesticide its concentration increases in successive trophic levels. The top level consumers or tertiary consumers or quaternary consumers face mortality due to accumulation of toxic in higher concentration due to consumption of organisms at lower trophic levels as organisms of the lower trophic levels consume the toxic and incorporate them in food chain or food web. Such chemicals cannot be digested or degraded in the body, thus they are passed on from one trophic level to another in a food chain or food web.

It’s A. increases

Explanation:

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