22. Starting from the north and going south.list Africa's lithospheric regions in the correct order. Savanna, Sahel, Sahara E Sahara, Sahel, Savanna Sahara, Savanna, Sahel Sahel, Savanna, Sahara E

The correct answer is: Sahara, Savanna, Sahel.<br /><br />Explanation: The Sahara Desert is the largest hot desert in the world and is located in North Africa. To the south of the Sahara Desert is the Sahel region, which is a semi-arid region that serves as a transitional zone between the Sahara Desert and the more fertile regions to the south. The Savanna region is located south of the Sahel and is characterized by grasslands and scattered trees. Therefore, the correct order of Africa's lithospheric regions from north to south is Sahara, Savanna, Sahel.