The Cretaceous-Tertiary (K-T)boundary event took place how many millions of years ago?
A)540
B)245
C)65
D)25

Question

Quizplus · Accepted Answer

The K-T boundary event took place 65 million years ago, marking the end of the Cretaceous period and the beginning of the Tertiary period. Therefore, the correct answer is C. Choice A, 540 million years ago, is too early for the K-T boundary event. Choice B, 245 million years ago, is closer to the time of the Permian-Triassic extinction event. Choice D, 25 million years ago, is too recent for the K-T boundary event.

The Cretaceous-Tertiary (K-T)boundary Event Took Place How Many Millions of Years