How to draw a food pyramid

A food pyramid, also known as an ecological pyramid, is a graphical representation showing the biomass or bio-productivity at each trophic level in an ecosystem. To draw one, you stack horizontal bars, with the producers (like plants) forming the widest base at the bottom, representing the largest biomass and energy. Above this, you place the primary consumers (herbivores), then the secondary consumers (carnivores that eat herbivores), and finally the tertiary consumers (carnivores that eat other carnivores) at the narrowest top. Each level is smaller than the one below it, illustrating the decrease in energy and biomass as you move up the food chain.