Asked by Rebecca Jacob on May 22, 2024
Verified
The Precambrian began with an Earth that was too hot for life and had no oxygen during the ____ eon.
A) Archaean
B) Hadean
C) Proterozoic
D) Phanerozoic
E) Cambrian
Precambrian
Period of Earth’s history from 4.6 billion to 541 million years ago: the Hadean, Archean, and Proterozoic eons.
Archaean
Relating to the Archaea domain, consisting of single-celled organisms distinct from bacteria and eukaryotes, often found in extreme environments.
- Gain an understanding of the order in which life forms evolved on Earth.
Verified Answer
PC
PHYSIQUE CHIEFMay 24, 2024
Final Answer :
B
Explanation :
The Hadean eon is recognized as the first geologic eon of the Earth's history, extending from the formation of the Earth about 4.6 billion years ago to the end of the Late Heavy Bombardment period around 3.8 billion years ago. During this time, the Earth's surface was molten and too hot for life, and there was no oxygen present in the atmosphere.
Learning Objectives
- Gain an understanding of the order in which life forms evolved on Earth.