The number of species on the planet is declining. Over the past few hundred years, humans have increased the species extinction rate by as much as 1,000 times over background rates typical over the planet's history (medium certainty), [referenced chart... Resilience Thinking: Sustaining Ecosystems and People in a Changing World - Seite 4 von Brian Walker, David Salt - 2012 - 192 Seiten Eingeschränkte Leseprobe -
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