If the flow of energy in an arctic ecosystem goes through a simple food chain, perhaps involving humans, starts from seaweeds 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 seaweeds is lower than that of the seals.
C)Seal meat probably contains the highest concentrations of fat-soluble toxins.
D)Seal populations are larger than fish populations.
E)The seaweed can potentially provide more food for humans than the seal meat can.

Question

Quizplus · Accepted Answer

The seaweed is the primary producer in the food chain, and therefore has the potential to provide more food for humans than the other organisms in the chain. Choice A is not true because seals have a higher biomass than polar bears and are therefore able to provide more food. Choice B is not necessarily true and cannot be inferred from the food chain provided. Choice C is likely true because top predators, such as seals, tend to accumulate higher concentrations of toxins than lower trophic levels. Choice D is not necessarily true and cannot be inferred from the food chain provided.

If the Flow of Energy in an Arctic Ecosystem Goes