| A | B |
|---|
| archipelago | A group or chain of islands. |
| deforestation | The widespread destruction of the world’s forests. |
| slash and burn | Type of agricultural method in which forests are cut down and the vegetation burned (the ash creates fertile farmland). |
| desertification | The process in which land slowly dries out until little or no vegetation exists. |
| migration | The mass movement of people from one area to another. |
| natural resources | Various materials found in nature which people use in manufacturing. |
| river | Provides many resources including water for irrigation, transportation, and silt |
| river valleys | These often have fertile land and were the first sites for the earliest civilizations. |
| silt | Fertile soil carried and deposited along rivers during flood season. |
| terrace farming | Cutting into a mountain to create flat land for farming. |
