What is a trophic level a food web and an energy pyramid?

A trophic level refers to the position an organism occupies in a food web, which is a complex network of feeding relationships among organisms in an ecosystem. In a food web, producers (like plants) form the base, followed by primary consumers (herbivores), secondary consumers (carnivores), and so on. An energy pyramid illustrates how energy decreases from one trophic level to the next, with only about 10% of the energy being transferred up the pyramid, highlighting the inefficiency of energy transfer in ecosystems. Thus, both concepts emphasize the flow of energy and nutrients through ecological systems.