Fossil evidence indicates that dinosaurs became extinct approximately ___ years ago.
A) 65 thousand
B) 650 thousand
C) 6,500,000
D) 65 million
E) 650,000,000

Question

Quizplus · Accepted Answer

Fossil evidence indicates that dinosaurs became extinct approximately 65 million years ago, which is why option D is the correct answer. Option A is not correct because 65 thousand years ago is a relatively recent time period that falls within the range of human history. Option B is also incorrect since it is an even shorter period of time that is not consistent with the vast scale of geological time. Option C is also incorrect since 6.5 million years ago is still a relatively recent period in Earth's history that predates the evolution of humans, but is not the time period associated with dinosaur extinction. Finally, option E is incorrect since 650 million years ago is further back in time than the emergence of most complex life forms and has nothing to do with the extinction of the dinosaurs.

Fossil Evidence Indicates That Dinosaurs Became Extinct Approximately ___ Years