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.
The Sahara Desert, located in North Africa, marks itself as the largest desert in the world by covering more than 3.5 million square miles. Many countries bordering the Sahara experience extreme heat during the summer because of the arid vastness of the Sahara. It can also turn bitterly cold at night. The Sahara Desert is a dry, sandy and arid wasteland. The highest point of the Sahara is Mount Koussi, which is more than 11,000 feet above sea level. At its lowest point, in Egypt, the Sahara is more than 400 feet below sea level.