The mass extinction at the end of the Cretaceous period was likely the result of:
A) rising seawater.
B) loss of vegetation.
C) extreme predation.
D) a dramatic change in climate.
E) the appearance of new competitors.

Question

Quizplus · Accepted Answer

The mass extinction at the end of the Cretaceous period, which notably led to the demise of the dinosaurs, is widely attributed to a dramatic change in climate. This change was likely triggered by a massive asteroid impact (the Chicxulub impactor) and/or significant volcanic activity, leading to drastic environmental changes that many species could not survive.

The Mass Extinction at the End of the Cretaceous Period