Which pyramid best explains why there are typically only four to five links in a food chain? 

A)  the numbers pyramid 
B)  the energy pyramid 
C)  the biomass pyramid 
D)  the matter pyramid

The energy pyramid best explains why there are typically only four to five links in a food chain. As energy is lost at each trophic level, there is not enough energy available to sustain a large number of links in the chain. Therefore, the energy available limits the number of trophic levels in the ecosystem, resulting in a relatively short food chain.