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How many species have gone extinct in the last 100 years

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They found that for every 10,000 species in the world, about two of them die off every century. In the past 100 years alone, however, about 500 species have become extinct instead of the nine species that would have been expected at natural rates
User Zhao Yi
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Answer:

500 species

Step-by-step explanation:

User Eaykin
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