If the flow of energy in an arctic ecosystem goes through a simple food chain, perhaps involving humans, starting from phytoplankton to zooplankton to fish to seals to polar bears, then which of the following could be TRUE?
A) Polar bears can provide more food for humans than seals can.
B) The total biomass of the fish is lower than that of the seals.
C) Seal meat probably contains the lowest concentrations of fat-soluble toxins.
D) Seal populations are larger than fish populations.
E) Fish can potentially provide more food for humans than seal meat.

Question

Quizplus · Accepted Answer

In general, lower trophic levels in a food chain have a higher biomass and are more abundant than higher trophic levels. Therefore, it is likely that there are more fish than seals in this arctic ecosystem, making fish a potentially larger food source for humans than seal meat. The other answer choices are not supported by the information provided in the question or are likely to be false.

If the Flow of Energy in an Arctic Ecosystem Goes