Select the following statements that are related to mass extinctions.
A)A mass extinction occurs when extinctions sharply outpace the formation of new species.
B)Periods of mass extinctions have occurred five times over the history of life on Earth.
C)The most severe mass extinction occurred at the end of the Cretaceous period.
D)The current level of species diversity is so high it is highly unlikely that another mass extinction could occur.
E)During periods of mass extinction,dominant groups of organisms are protected and survive to repopulate.

Question

Quizplus · Accepted Answer

A) Mass extinctions are characterized by a rapid and significant decrease in biodiversity, where the rate of extinctions far exceeds the rate of new species formation. B) There have been five major mass extinction events in Earth's history, each drastically reducing the number of species.

Select the Following Statements That Are Related to Mass Extinctions