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Grassland ecosystems, such as savannas, are characterized by vast open spaces dominated by grass rather than large forests of trees. These ecosystems are incredibly important for various species of plants, animals, and insects that depend on this unique environment to thrive. The savanna specifically features scattered trees among expanses of grasses. This combination provides a diverse habitat that supports a wide array of wildlife.
The presence of scattered trees in savannas is usually limited by factors such as soil fertility, fire occurrence, and grazing by large herbivores. Savannas are also known for their biodiversity, including animals like lions, elephants, zebras, and various birds. These ecosystems play a critical role in the planet's health by sequestering carbon, influencing hydrological cycles, and supporting traditional human lifestyles.

The climate and seasons of savannas are unique and distinguish them from other biomes. Savannas typically experience two main seasons: a wet season and a dry season. This seasonal pattern is driven by shifts in atmospheric currents and rainfall distribution.
During the wet season, savannas receive most of their annual rainfall, which helps sustain the grasslands and the scattered trees. Vegetation flourishes, turning the landscape into a vibrant green. Conversely, the dry season is marked by scarce rainfall and arid conditions. Vegetation becomes sparse, and water becomes a limited resource.
These cyclical changes in climate are essential for maintaining the savanna's ecological balance. Adaptations to these seasons can be observed in both the plant and animal species that inhabit this biome.

Temperature patterns in savannas are relatively consistent, with warm temperatures prevailing throughout the year. Unlike some biomes that experience significant seasonal temperature shifts, savannas maintain more stable temperature ranges.
During the day, temperatures can reach high levels, often between 20°C to 30°C (68°F to 86°F), promoting the growth of grasses and supporting the metabolism of warm-blooded animals. Nighttime temperatures may cool slightly but generally remain mild. These warm conditions are crucial for the various species that have adapted to living in the savanna.
Understanding these temperature patterns is important for recognizing how plants and animals survive, grow, and reproduce in such an environment.

Rainfall distribution in savannas is one of the most defining factors of this biome. Savannas do not receive abundant rainfall; instead, they experience distinct seasonal precipitation. Most of the rainfall occurs during the wet season, which usually lasts for about six months of the year.
The amount of rainfall during this period can vary, but it typically totals between 500 and 1500 millimeters (20 to 60 inches) annually. The dry season, which dominates the rest of the year, sees very little to no rainfall. This stark contrast in rainfall distribution can greatly influence the types of vegetation that can survive in the savanna.
Many plants in the savanna are drought-resistant, meaning they can survive long periods without water. Similarly, animals have developed behaviors and strategies to cope with these fluctuating conditions.