How Does the Rate of Extinction Today Compare to the Rates

Multiple Choice

How does the rate of extinction today compare to the rates in the past?

A) The rate is much lower today than it has been, on average, in the past.
B) The rate is about the same today as it has been, on average, in the past.
C) The rate is much higher today than it has been, on average, in the past.
D) The extinction rate today can't be estimated or calculated.