What natural features are formed in connection with the crossing of the equator from the center of Africa?

Since the equator runs through the center of Africa, the climate here varies from hot and humid in the central parts to dry and hot in the north and south. Thanks to such fluctuations and the virtual absence of cold seasons in Africa, you can find unique plants and animals, many of which are not found anywhere else in the world. This primarily concerns the African savannah, where more mammalian species live than in any other natural area.