Fossil Evidence Indicates That Prokaryotic Cells First Existed on the Earth

question 15

Multiple Choice

Fossil evidence indicates that prokaryotic cells first existed on the Earth

• A) 3.5 million years ago.
• B) 3.5 × 1012 years ago.
• C) 3.5 billion years ago.
• D) 350 years ago.
• E) 3500 years ago.

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