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.
History Ancient Africa. The Sahara Desert is the largest hot desert on Earth (the cold desert of Antarctica is larger). The Sahara has played an important role in the development of African culture and history.istory Ancient Africa. The Sahara Desert is the largest hot desert on Earth (the cold desert of Antarctica is larger). The Sahara has played an important role in the development of African culture and history.