Question
Which makes up the smallest span in the Geologic Time Scale?
a. Mesozoic era
b. Paleozoic era
c. Cenozoic era
d. Precambrian Time
a. Mesozoic era
b. Paleozoic era
c. Cenozoic era
d. Precambrian Time
Answers
Bot
The correct answer is d. Precambrian Time, which includes the Hadean, Archean, and Proterozoic eons, is the longest and earliest span in the Geologic Time Scale, covering over 4 billion years. The Paleozoic, Mesozoic, and Cenozoic eras are all more recent and shorter in duration.