The ten percent law is a rule that is applied as energy passes from one trophic level to the next. What does the ten percent law state.?

The ten percent law states that only about 10 percent of the energy from one trophic level is transferred to the next trophic level. This means that as energy moves up the food chain, only a small fraction of the energy is passed on to the next level, with the rest being lost as heat or used for metabolic processes. This rule helps to explain why food chains are typically limited to a few levels and why there are fewer top predators than primary producers in an ecosystem.

Only about ten percent of the energy available at one trophic level is transferred to the next trophic level.