Question

what term is used to describe an increased concentration of toxic chemicals as we move up the food chain? biomagnification biodegrading

Explanation:

Biomagnification refers to the process where the concentration of toxic substances increases as we move up the food chain (from lower trophic levels to higher ones), as organisms at higher levels consume multiple organisms from lower levels, accumulating more toxins. Biodegrading is the breakdown of substances by biological agents, not related to toxin concentration increase in a food chain.

Answer:

A. biomagnification