A scalpel, or lancet, is a small and extremely sharp bladed instrument used for surgery, anatomical dissection, and various arts and crafts (called a hobby knife). Scalpels may be single-use disposable or re-usable.
The Sahara desert is the largest hot desert in the world, located in the northern part of the African continent. The Desertâs âmean annual temperature exceeds 86 degrees and it could get up to as high as 122 degrees in the summer, and as low as 30 degrees in the winterâ (7).
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. National Geographic: Desert Profile.