Which of the following statements best explains why the energy_pyramid is narrowest (small) at the top? The diagram below shows an energy pyramid for an aquatic ecosystem.
Top
carnivores
Carnivores
Herbivores
Producers
The organisms at the top of the pyramid have the largest population sizes.
The organisms at the top of the pyramid need only a small amount of energy for their metabolism
The organisms at the top of the pyramid receive only a small fraction of the energy that originally enters
the system
The organisms at the top of the pyramid are the most efficient feeders.