Respuesta :
Assuming 10-percent trophic efficiency, the other 90 percent of the energy associated with a given trophic level is transferred to higher tropic levels.
The tendency is that only 10% of energy moves from one nutrient level to the next and 90% is lost as heat moves up the food chain. There is less and less energy for each nutrient level, going up the pyramid. The amount of energy corresponds to the amount of biomass. Nutritional efficiency is the efficiency by which mass (or energy) is transferred from one trophic level to the next through predation.
Personal efficiency is the efficiency with which a typical individual turns consumption into somatic growth. The Ten Percent Rule states that each nutrient level can only contribute 10% of the energy to the next. The remaining 90% is used to live, grow, reproduce and lose to the environment as heat. All energy pyramids begin with energy from the Sun being transferred to the first nutritional level of the producers.
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