Question

Question 7 of 10

The
era featured the longest periods with no life forms on Earth.
A. Mesozoic
B. Precambrian
C. Palezoic
D. Cenozoic

Answer 1

Answer: B

Explanation: The Hadean is the first in the Precambrian , starting from 4.6 billion years ago to about 4 billion years ago. The Hadean is not mentioned in the history on Earth because during this time period there was no life on Earth. This era is when Earth was forming.