env geo

Yellowstone national park
first national park in the worldpreserves extensive wildernesstry to make it as it was before human habitation
demands and dangers for our parks
many parks are islands of nature surrounded and threatened by destuctive land uses and humans traffic jams and pollution b/c of how crowded some can get visitors demand services mining and oil interests try to get permissions to drill in the parks
biogeographical area
an entire ecosystem and its land, water, air, and wildlife resources this must be managed as a unit
old-growth forests
forests that cover a large enough area and have been undisturbed by humans long enough that trees can live out a natural life cycle and ecological processes can occur normally
the International Union for the Conservation of Nature and Natural Resources (IUCN)
divides protect