Multiple Choice
Which pairing of occurrence and date is NOT correct?
A) origin of invertebrates-630 million years ago
B) origin of life-4.6 billion years ago
C) origin of eukaryotic cells-2.1 billion years ago
D) origin of prokaryotic cells-3.5 billion years ago
E) chordate evolution-545 million years ago
Correct Answer:

Verified
Correct Answer:
Verified
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