Tropical savannas are grassland ecosystems characterized by a mix of grasses and scattered trees. They typically occur in regions with a warm climate and distinct wet and dry seasons. These areas support a variety of wildlife, including large herbivores like zebras and elephants, as well as predators such as lions and cheetahs. The soil in tropical savannas is often nutrient-rich, which supports the growth of grasses. However, the presence of trees is limited due to periodic fires and grazing. This unique environment plays a crucial role in maintaining biodiversity and is found in regions like Africa and parts of Australia.