We don't have page 9 in the Earth Science Reference Tables.
Why did you post this question here?
Approximately what percentage of the estimated age of Earth does the Cenozoic Era represent and how do you
know? look at pg. 9 in Earth Science Reference Tables?
a. 1.4%
b. 5.0%
c. 11.9%
d. 65.0%
2 answers
a. 1.4 percent