| A | B |
| delta | A flat area of land that's shaped like a triangle. |
| deposit | To drop weathered material in a new place. |
| erosion | The moving of weathered material by wind, water, or ice. |
| flood plain | An area of land near a river that gets covered by water when the river overflows. |
| landfill | A huge mound of buried trash. |
| landform | A feature of the land that has a special shape (mountains, valleys, plateaus, and plains). |
| natural resources | Things that people need and want from the land. |
| ore | Rock that contains valuable minerals or metals. |
| pollute | To spoil the land with litter or harmful wastes. |
| restore | To return something to the way it was before. |
| weather | To break rock down naturally. |
| wetland | An area of land that has water near or above its surface for most of the year. |