| | Sherwood Forest Information (Site not responding. Last check: 2007-10-03) |
 | | Forests can be found in all regions capable of sustaining tree growth, at altitudes up to the tree-line, except where natural fire frequency is too high, or mankind has intervened. |
 | | A forest in its natural form is home to many animal and plant species, and biomass per unit area is high compared to most other biomes, though in some types of forests such as boreal forests, much of it is locked in lignin and other materials that decompose slowly. |
 | | Forests are usually classified in terms of the biome in which they exist, and in terms of leaf longevity of the major species (whether they are evergreen or deciduous). |
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