NCERT · Class 10 · Science · Our EnvironmentState the 10 percent law of energy flow in an ecosystem.

According to the 10 percent law proposed by Lindeman, only 10 percent of the energy entering a particular trophic level is available for transfer to the next higher trophic level. The remaining 90 percent of the energy is lost to the environment as heat during metabolic activities like respiration, digestion, and movement. This rapid decrease in energy limits the number of trophic levels in a food chain.