Which of the following is a key characteristic of tropical savanna climates?

A key characteristic of tropical savanna climates is the presence of distinct wet and dry seasons. This climatic pattern occurs primarily in regions near the equator where the Intertropical Convergence Zone (ITCZ) influences weather patterns. During the wet season, these areas receive abundant rainfall, fostering lush vegetation and supporting diverse ecosystems. Conversely, the dry season is marked by significantly reduced precipitation, leading to drier conditions and often resulting in the grasslands characteristic of savanna environments.

The contrast between these two seasons is vital for the ecology of the region. It affects wildlife and vegetation, with many species adapted to take advantage of the rich resources during the wet season while also enduring the challenges of the dry season. This cyclical climate pattern underlines the unique characteristics of tropical savannas, distinguishing them from other climate types that may have more consistent rainfall or temperature throughout the year.

In this context, it's noted that other climatic conditions such as year-round rainfall and high humidity are typical of tropical rainforests, not savannas. Likewise, consistent temperatures and winter snow are characteristics of temperate climates, while extreme seasonal temperature changes are associated with continental climates. These aspects further illustrate the uniqueness of tropical savanna climates centered around their marked seasonal cycles.