The Cambrian Explosion began approximately
A) 2.1 billion years ago
B) 542 million years ago
C) 1.2 billion years ago
D) 65 million years ago

Name: The Cambrian Explosion began approximately A) 2.1 billion years ago B) 542 million years ago C) 1.2 billion years ago D) 65 million years ago
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The Cambrian Explosion began approximately 542 million years ago, as evidenced by the rapid diversification of multicellular animal life in the fossil record during this time period.

The Cambrian Explosion Began Approximately