alleryPresent extinction rates compared with pre-human times are:
AOnly twice as fast
B100 to 1000 times faster
CRoughly the same as before
DNoticeably slower now
Answer & Solution
Correct answer: B. 100 to 1000 times faster
1. Earth saw five mass extinctions before humans.
2. The sixth differs in its speed.
3. Rates are 100 to 1000 times faster.
_Source: syllabus Biology, Chapter 15, Biodiversity and Conservation._
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