What percent of all species that ever existed do biologists estimate are now extinct?
A) 25%
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Advanced Placement (AP), 06.06.2020 11:00 brittanysanders
What percent of all species that ever existed do biologists estimate are now extinct?
A) 25%
C) 50%
D) 75%
B) 5%
E) 99%
Answers: 1
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