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    Geology/Geography/Oceanography/Atmospheric Sciences
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    Living in the Environment
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    Exam 5: Evolution and Biodiversity
  5. Question
    What Percentage Do Biologists Estimate Is the Portion of All
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What Percentage Do Biologists Estimate Is the Portion of All

Question 63

Question 63

Multiple Choice

What percentage do biologists estimate is the portion of all species that ever lived which are now extinct? 


A)  39% 
B)  59% 
C)  79% 
D)  99%

Correct Answer:

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