Edward Osborne Wilson

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"Current State of Biological Diversity, The" 13 Conservative estimate of extinction rate: 17,500 species per year, or one out of every thousand species per year. This figure is 1,000 to 10,000 times that before human intervention.
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Biodiversity 13 Conservative estimate of extinction rate: 17,500 species per year, or one out of every thousand species per year. This figure is 1,000 to 10,000 times that before human intervention.