1 About Kidney Disease Diet Restrictions The job of the body's kidneys is to filter fluids and remove extra waste from the body. 2  When kidneys fail, fluid and wastes can accumulate in the body and be hazardous to youâ¦. About Kidney Disease Diet Restrictions The job of the body's kidneys is to filter fluids and remove extra waste from the body. 2  When kidneys fail, fluid and wastes can accumulate in the body and be hazardous to youâ¦.
The Sahara divides the continent into North and Sub-Saharan Africa. The southern border of the Sahara is marked by a band of semiarid savanna called the Sahel; south of the Sahel lies the lusher Sudan.
African Desertification. The Sahel region, which borders the Sahara, is not a true desert but may become one as the Sahara advances southward. Arid lands on the edge of the Sahara in the Horn of Africa, such as the Ogaden Desert, consume portions of Eritrea, Ethiopia, Kenya, Somalia and the Sudan.Egypt's Nubian Desert and Ethiopia's Danakil Desert are also arid environments that might soon become Africa's next big desert.rid lands on the edge of the Sahara in the Horn of Africa, such as the Ogaden Desert, consume portions of Eritrea, Ethiopia, Kenya, Somalia and the Sudan. Egypt's Nubian Desert and Ethiopia's Danakil Desert are also arid environments that might soon become Africa's next big desert.