Q: How much of the original energy of the producers is available to an organism in the third trophic level?

Flexi Says: Energy is passed up a food chain or web from lower to higher trophic levels. However, generally only about 10 percent of the energy at one level is available to the next level. The second level, primary consumers, has about 10% of the energy available at the producer level. The third level, secondary consumers, has about 1% of the energy available at the producers level.