A robust ecosystem refers to a biological community that is diverse and resilient, capable of withstanding environmental changes and disturbances. It includes a variety of species, such as plants, animals, and microorganisms, all interacting within their habitats. This diversity helps maintain balance, ensuring that resources like food and water are available for all organisms. In a robust ecosystem, the presence of different species contributes to its overall health. For example, pollinators like bees play a crucial role in plant reproduction, while predators help control prey populations. Such interactions create a stable environment that supports life and promotes sustainability.