Overall, the Arctic is much cooler than Antarctic.
Indicate whether the statement is true or false
Question 2
Which of the following is correct in regards to the geologic time scale?
A) An epoch is composed of one or more periods.
B) The largest defined unit is an eon or, according to some, a supereon.
C) An era is the smallest unit of geologic time.
D) Every period is composed of 2 epochs.
