The Most Accepted Explanation for the Mass Extinction Event at the Cretaceous-Tertiary

Question

The most accepted explanation for the mass extinction event at the Cretaceous-Tertiary boundary is
A)volcanic activity in Asia.
B)an asteroid impact in Central America.
C)climate change brought on by Australian fires.
D)a freshwater bacteria that caused kidney failure.
E)a virus spread by small mammals.

Accepted Answer

The mass extinction event at the Cretaceous-Tertiary boundary is widely accepted to have been caused by an asteroid impact in Central America, creating global wildfires, tsunamis, and a nuclear winter effect, leading to the extinction of the majority of dinosaur species.