MediumNEET 2026
+4 / -1
Since the origin and diversification of life on Earth, there have been five episodes of mass extinction of species. How is the sixth extinction, which is in progress, different from the previous episodes?
A
The current species extinction rates are far lower than those in previous episodes.
B
The present species extinction rates are 100 to 1000 times faster than in the prehuman times.
C
The present species extinction rate is zero.
D
The current species extinction rate is nearly 10 times faster than in previous episodes.
Explanation
The ongoing sixth mass extinction is primarily driven by human activities. Current extinction rates are estimated to be 100–1000 times higher than the natural background extinction rates observed before human influence.
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