| A | B |
|---|
| silt | finely ground fertile soil that is good for growing crops |
| oasis | a wet, fertile area in a desert where a natural spring or well provides water |
| zonal | meaning "organized by zone" |
| desertification | the spread of desert-like conditions |
| savanna | an area of tall grasses and scattered trees and shrubs |
| rift valleys | places on Earth's surface where the crust stretches until it breaks |
| droughts | periods when little rain falls and crops are damaged |
| basin | a generally flat region surrounded by higher land such as mountains and plateaus |
| periodic market | an open-air trading market that is set up once or twice a week |
| copper belt | stretches from northern Zambia to southern Democratic Republic of the Congo |
| escarpment | the steep face at the edge of a plateau or other raised area |
| veld | open grrassland areas in South Africa |
| pans | low flat areas |
