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 energy passes to the next higher level.
D. most producers are inedible.
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 energy passes to the next higher level. D. most producers are inedible.