Nature

===Wilderness===
[[File:Biogradska suma.jpg|thumb|[[Old-growth forest|Old growth]] [[European Beech]] forest in [[Biogradska Gora]] National Park, [[Montenegro]]]]
{{Main|Wilderness}}
'''Wilderness''' is generally defined as areas that have not been significantly modified by human activity. Wilderness areas can be found in preserves, estates, farms, conservation preserves, ranches, [[:Category:national forests|national forests]], [[national park]]s, and even in urban areas along rivers, gulches, or otherwise undeveloped areas. Wilderness areas and protected [[parks]] are considered important for the survival of certain [[species]], ecological studies, [[Habitat conservation|conservation]], and solitude. Some nature writers believe wilderness areas are vital for the human spirit and creativity,<ref name="Man p155-157">Botkin, Daniel B. (2000) ''No Man's Garden'', Island Press, pp. 155–157, {{ISBN|1-55963-465-0}}.</ref> and some ecologists consider wilderness areas to be an integral part of the Earth's self-sustaining natural [[ecosystem]] (the [[biosphere]]). They may also preserve historic [[genetics|genetic]] traits and that they provide [[habitat]] for wild [[flora (plants)|flora]] and [[fauna (animals)|fauna]] that may be difficult or impossible to recreate in [[zoo]]s, [[arboretum]]s, or [[laboratory|laboratories]].