Multiple Choice
Carbon-based residues found in rocks near Greenland suggest that the first life forms on Earth may have arisen ____.
A) more than 3.8 billion years ago
B) at the same time as the formation of Earth
C) relatively recently - about 250,000,000 years ago
D) about 10,000 years ago
Correct Answer:
Verified
Correct Answer:
Verified
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