The third largest desert in the world, and the largest non-polar desert is the Sahara. Situated in North Africa, the Sahara makes up parts of Algeria, Chad, Egypt, Eritrea, Libya, Mali, Mauritania, Morocco, Niger, Sudan, Tunisia, and Western Sahara. The Sahara Desert spans over 9,400,000 square kilometers across the continent, and is the world's hottest desert.
âº A donor is also someone who gives blood or who agrees to give an organ or body part to help someone else. (Definition of âdonorâ from the Cambridge Academic Content Dictionary Â© Cambridge University Press)
A donor is a high energy orbital with one or more electrons. An acceptor is a low energy orbital with one or more vacancies: An acceptor is an atom or group of atoms whose lowest unfilled atomic or molecular orbital is lower in energy than that of a reference orbital.