The Potential Seventh Mass Extinction Refers to ____

The potential seventh mass extinction refers to ____.

A) the loss of 50% of species on Earth, including dinosaurs, at the end of the Cretaceous
B) the most extensive loss of species that occurred during the Permian
C) what will happen to the human species if a nuclear war occurs
D) the rapid loss of biodiversity due to human degradation of the environment
E) events that occurred just before insects diversified on land