Ecological networks are systems that illustrate the relationships between different organisms and their environments. These networks show how species interact with one another, including predator-prey relationships, competition, and symbiosis. By mapping these connections, scientists can better understand the flow of energy and nutrients within ecosystems. These networks can also highlight the impact of human activities on biodiversity and ecosystem health. For example, the decline of a single species can disrupt the entire network, affecting plants, animals, and even microorganisms. Studying ecological networks helps in conservation efforts and in maintaining the balance of ecosystems.