| A | B |
|---|
| polder | a patch of land reclaimed from the sea |
| population density | the average number of people living in an area |
| peninsula | land nearly surrounded by water |
| plateau | a large, raised area of mostly level land |
| tributary | a river or steam that flows into a larger river |
| navigable | a water way that is clear enough for ships to travel |
| rain shadow | the area on the dry, sheltered side of a mountain |
| prairie | a grassland area like that in central and southern parts of the North European Plains before they were cleared |
| tundra | treeless plain where the ground is permafrost. Grasses and mosses can grow in this area. |
| permafrost | permanently frozen soil |
| taiga | immense expanse of trees in Russia |
| steppe | Russian grassland. The soil is fertile, black and good for farming like the Great Plains of the United States |
| loess | a rich dustlike soil deposited on the North European Plain by winds. |
| hydroelectric power | power generated by water-driven turbines |
| fossil fuel | fuel such as coal, oil, and natural gas that developed from fossils (remains of ancient plants and animals) |
| reserves | the available supply |
| Ruhr | a region near the Ruhr River in Germany with large coal deposits. An important industrial region of Wester Europe |
| North Sea | The sea located between Great Britain and mainland northwestern Europe |
| Silesia | The place where Poland, the Czech Republic, and Germany meet; a region in the Czech Republic with large coal deposits |
