How are the Sahel and savanna different?

The Sahel is a semi-arid region located just south of the Sahara Desert, characterized by a mix of grasslands, shrubs, and occasional trees. It serves as a transitional zone between the desert and the more fertile savanna regions further south. In contrast, the savanna is a grassland ecosystem that typically features scattered trees and experiences distinct wet and dry seasons, supporting a diverse range of wildlife and vegetation. While both regions share some similarities, the Sahel is drier and has a shorter growing season compared to the more lush and productive savanna.