The primary way energy is transferred in food webs is through the consumption of organisms. Energy originates from the sun and is converted into chemical energy by producers (like plants). Herbivores, or primary consumers, obtain energy by eating these producers. This energy then moves up the food web as predators consume herbivores and other organisms. Each level in the food web typically loses some energy through metabolic processes (known as the 10% rule), meaning that only a fraction of the energy is passed to the next level. Thus, energy transfers are pivotal in maintaining ecological balance.