Food chains are sometimes short because ________.
A. only a single species of herbivore feeds on each plant species
B. local extinction of a species causes extinction of the other species in its food chain
C. most of the energy in a trophic level is lost as it passes to the next higher level
D. predator species tend to be less diverse and less abundant than prey species
Answer:C
Food chains are sometimes short because ________.
A. only a single species of herbivore feeds on each plant species B. local extinction of a species causes extinction of the other species in its food chain C. most of the energy in a trophic level is lost as it passes to the next higher level D. predator species tend to be less diverse and less abundant than prey species