Answer:
Therefore, it is the Kalahari Desert that separates South Africa from the Congo Basin.
Step-by-step explanation:
South Africa is separated from the Congo Basin by the a. Kalahari Desert.
The Kalahari Desert is a large semi-arid sandy savannah that stretches across Botswana, Namibia, and South Africa. It is located in the southern part of Africa, while the Congo Basin is situated in the central part of the continent.
The Kalahari Desert acts as a natural barrier between South Africa and the Congo Basin, preventing direct contact between these two regions. The desert's arid conditions and sandy landscape make it difficult for plants and animals from the Congo Basin to traverse and establish themselves in South Africa.