| A | B |
|---|
| desertification The process by which fertile land becomes desert | typically as a result of drought |
| diversity difference | variety; a condition of having many different types or forms |
| North Africa an area of northern Africa between the Sahara and the Mediterranean Sea; Algeria | Eqypt |
| oasis a small fertile or green area in a desert region | usually having a spring or well. |
| rainforest a dense evergreen forest | near the equator |
| tuareg Desert nomads who live in small groups throughout the central and south Sahara. | Nicknamed "the Blue Men of the Desert"; members of a nomadic Berber people of the Sahara |
| nomad A member of a group that has no permanent home | wandering from place to place in search of food and water |
| soil erosion Movement of soil components | especially topsoil |
