-Examine the figure. Which statement correctly compares the biomass of different trophic levels to the concentrations of PCB contained in each level.
A)Only some of the biomass from one level moves to the consumer, whereas PCBs become more concentrated with each trophic transfer.
B)Higher trophic levels have more total biomass and higher concentrations of PCBs than lower trophic levels.
C)Biomass increases with each trophic transfer, while PCBs become less concentrated.

Question

-Examine the figure. Which statement correctly compares the biomass of different trophic levels to the concentrations of PCB contained in each level.
A)Only some of the biomass from one level moves to the consumer, whereas PCBs become more concentrated with each trophic transfer. 
B)Higher trophic levels have more total biomass and higher concentrations of PCBs than lower trophic levels. 
C)Biomass increases with each trophic transfer, while PCBs become less concentrated.

Quizplus · Accepted Answer

As energy moves up the trophic levels, biomass decreases, but PCBs, being persistent organic pollutants, become more concentrated due to biomagnification.

-Examine the Figure