An ecological pyramid is a graphical representation that illustrates the distribution of energy, biomass, or the number of organisms across different trophic levels in an ecosystem. It typically consists of three main types: the pyramid of energy, the pyramid of biomass, and the pyramid of numbers. Each level represents a different group of organisms, starting with producers at the base and moving up to various levels of consumers. The base of the pyramid is formed by primary producers, such as plants and algae, which convert sunlight into energy through photosynthesis. As you move up the pyramid, primary consumers, like herbivores, feed on the producers, followed by secondary and tertiary consumers, which include carnivores and omnivores. This structure helps illustrate the flow of energy and the interdependence of species within an ecosystem.