Question

Which of the following arranges the vocabulary words in order from LARGEST to smallest.(the most amount of time to the least amount of time).
a
Eon, Era, Period
b
Period, Eon, Era
c
Era, Eon, Period
d
Eon, Period, Era

Answer 1

Answer: a

Eon, Era, Period

Explanation:  

There may be 2 or more Eras in an Eon, and at least two Periods in an Era.

For example, The Phanerozoic Eon consists of the Cenozoic, Mesozoic, and Paleozoic Eras.

The Mesozoic Era consists of the Cretaceous, Jurassic, and Triassic Periods.