The Archean and Proterozoic eons are regrouped together as.
A - Precambrian
B - Phanerozoic
C - Paleozoic
D - Cambrian
Answer: A - Precambrian
Biology Questions and Answers.
A - Precambrian
B - Phanerozoic
C - Paleozoic
D - Cambrian
Answer: A - Precambrian