Which of the following is correct regarding the geologic time scale?
A)The Jurassic period occurred during the Paleozoic era.
B)Over 87 percent of Earth's history has elapsed during the more recent Cenozoic,Mesozoic,and Paleozoic eras.
C)The bulk of Earth's history has occurred during the Precambrian eon.
D)We live in the Tertiary period.

Question

Which of the following is correct regarding the geologic time scale?
A)The Jurassic period occurred during the Paleozoic era. 
B)Over 87 percent of Earth's history has elapsed during the more recent Cenozoic,Mesozoic,and Paleozoic eras. 
C)The bulk of Earth's history has occurred during the Precambrian eon. 
D)We live in the Tertiary period.

Quizplus · Accepted Answer

The Precambrian eon is the longest span of time in Earth's history, making up about 88% of Earth's history.
Answer: D (incorrect)
 The Tertiary period was officially replaced by the Paleogene and Neogene periods in 2009 by the International Commission on Stratigraphy.
Answer: A and B (incorrect)
 The Jurassic period is part of the Mesozoic era, not the Paleozoic era. Over 87% of Earth's history has elapsed during the Precambrian eon and the Paleozoic era, not the Cenozoic, Mesozoic, and Paleozoic eras combined.

Which of the Following Is Correct Regarding the Geologic Time