Multiple Choice
Tiny grains of zirconium silicate (zircons) found embedded in sedimentary rocks have been radiometrically dated to what age?
A) 3.5 billion years ago
B) 3.85 billion years ago
C) 4.4 billion years ago
D) 4.0 billion years ago
Correct Answer:

Verified
Correct Answer:
Verified
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