Question

The largest mass extinction event in the history of the Earth occurred at the end of the _______ period.

a. Cambrian
b. Ordovician
c. Permian
d. Devonian

Answer 1

The largest mass extinction event in the history of the Earth occurred at the end of the permian period.

Answer 2

The largest mass extinction event in the history of the Earth occurred at the end of the C) Permian period.