Question

Each food level has about ________ % less energy because of the energy lost in other levels.

Answer 1

Answer: About 90% is lost through heat.

Answer 2

Within all biological communities, energy at each trophic level is lost in the form of heat (as much as 80 to 90 percent), as organisms expend energy for metabolic processes such as staying warm and digesting food (see biosphere: The organism and the environment: Resources of the biosphere: The flow of energy).