A savanna is a type of ecosystem characterized by a combination of grasslands and scattered trees or shrubs. Savannas are found in tropical and subtropical regions, typically between tropical rainforests and desert biomes. They are often associated with warm climates and seasonal rainfall patterns.

Key features of savannas include:

1. **Grassland**: Savannas are dominated by grasses, which form a continuous ground cover. These grasses are adapted to the dry and fire-prone conditions of the savanna, with deep root systems and the ability to resprout after being burned.

2. **Trees and Shrubs**: Unlike true grasslands, savannas have scattered trees and shrubs interspersed throughout the grassy landscape. These trees are often deciduous, meaning they shed their leaves during the dry season to conserve water. Acacia and baobab trees are common in African savannas, while eucalyptus trees are found in Australian savannas.

3. **Seasonal Climate**: Savannas experience distinct wet and dry seasons. During the wet season, which typically coincides with the summer months, rainfall is more abundant, and the landscape becomes lush and green. In contrast, the dry season is characterized by little to no rainfall, leading to brown, dormant vegetation and increased risk of wildfires.

4. **Biodiversity**: Savannas are home to a diverse array of plant and animal species adapted to the unique conditions of the ecosystem. Large herbivores such as elephants, giraffes, and antelopes are common in African savannas, while kangaroos and wallabies are found in Australian savannas. Predators such as lions, cheetahs, and hyenas also inhabit savanna ecosystems.

5. **Human Impacts**: Savannas have been heavily impacted by human activities such as agriculture, grazing, and urbanization. In some regions, savannas have been converted to farmland for crops or pasture for livestock, leading to habitat loss and fragmentation. Conservation efforts are underway to protect remaining savanna habitats and the species that depend on them.

Overall, savannas are diverse and dynamic ecosystems that play a vital role in supporting biodiversity, providing ecosystem services, and sustaining livelihoods for millions of people around the world.

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