Question

13. Scientists estimate the current rate of extinction to be about ________ thenormal background extinction rate.A. 10 timesB. 100 timesC. 1,000 times

Answer 1

Answer: B. 100 times

Extinction rates in the modern era are around 100 E/MSY. This indicates that the rate of extinction for birds, mammals, and amphibians has been 100–1000 times higher than anticipated.

Answer 2

The modern rate of average extinction are around 100 E/MSY, being estimated by the scientists that the current rate of extinction to be about 100 times (b) the normal background extinction rate.