Current geological evidence suggests that life
A) must have appeared exactly 3.85 billion years ago
B) could have appeared as soon as the Earth formed, 4.6 billion years ago
C) could have appeared more than 3.85 billion years ago
D) must have appeared exactly 3.5 billion years ago

Question

Quizplus · Accepted Answer

Geological evidence, such as fossilized microorganisms, suggests that life may have appeared as early as 3.8 billion years ago, but it is also possible that it could have appeared even earlier, closer to the formation of Earth around 4.6 billion years ago. There is no evidence suggesting that life must have appeared at a specific time, such as exactly 3.85 or 3.5 billion years ago.

Current Geological Evidence Suggests That Life