Producers make their own food so they start with 100% of the energy. Then herbivores will eat them and receive 50% of their energy. When the herbivores are eaten by either omnivores or carnivores they get 50% of the organism consumed. Each time something is consumed they receive half of the energy passed.
Producers make their own food so they start with 100% of the energy. Then herbivores will eat them and receive 10% of their energy. When the herbivores are eaten by either omnivores or carnivores they get 10% of the organism consumed. Each time something is consumed they receive a tenth of the energy passed.
