| Term: | Tundra |
| Definition: | Treeless plains that lie poleward of the tree line. (Also called arctic desert.) The plants thereon are sedges, mosses, lichens, and a few small shrubs. Tundra is mostly underlaid by permafrost, with the result that drainage is bad and the soil may be saturated for long periods. It does not have a permanent snow-ice cover. |
| Term: | Tundra |
| Definition: | High latitude biome dominated by a few species of dwarf shrubs, a few grasses, sedges, lichens, and mosses. Productivity is low in this biome because of the extremes of climate. |
| Term: | Tundra |
| Definition: | Treeless terrain, with a continuous cover of vegetation, found at both high latitudes and high altitudes. |
| Term: | Tundra |
| Definition: | Treeless terrain, with a continuous cover of vegetation, found at both high latitudes and high altitudes |