Flexi Says: In ecosystems, only about 10 percent of the energy at one trophic level is available to the next level. So, the primary consumer level has 10% of the energy of the producer level, the secondary consumer level has 1% of the energy of the producer level, the tertiary consumer level has 0.1% of the energy of the producer level, and the quaternary consumer level has 0.01% of the energy of the producer level.
