Question

Which of the following is true regarding units of geologic time?

a. Eras are divided into epochs; epochs are divided into periods.
b. Epochs are divided into periods; periods are divided into eras.
c. Periods are divided into epochs; epochs are divided into eras.
d. Eras are divided into periods; periods are divided into epochs.

Answer 1

your answer would be D

Step-by-step explanation:

Answer 2

d. Eras are divided into periods; periods are divided into epochs. The geologic time is divided from the largest defined unit of time called supereon, which is composed of eons. Eons are further subdivided into eras, periods, epochs and the smallest unit of time - ages.