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BIO 120 Final Exam Review Pt. 1 Flashcards | StudBud
BIO 120 Final Exam Review Pt. 1
1 / 65
Recent discoveries of microscopic fossils have extended the known history of life to about:
A
4.5 billion years ago.
B
3.5 billion years ago.
C
2 billion years ago.
D
1 billion years ago.
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