 Biodiversity Hotspots
Earth's biologically richest places, the biodiversity hotspots claim especially high numbers of endemic species, yet their combined area covers less than two percent of the Earth's land surface. Each hotspot faces extreme threats, and has already lost at least 70 percent of its original natural vegetation.
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 High-biodiversity wilderness areas
Wilderness areas are vast regions of undisturbed land with very low human populations. These areas are important as major storehouses of biodiversity, for watershed protection, carbon sequestration, pollination and other ecosystem services. Five regions are considered "high biodiversity wilderness areas" because, like the hotspots, they have high plant endemism.
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Key marine ecosystems
These areas are Earth's most biologically rich and productive ocean environments (not indicated).
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