The Cambrian Explosion began approximately
A) 2.1 billion years ago
B) 545 million years ago
C) 360 million years ago
D) 65 million years ago

Question

Quizplus · Accepted Answer

The Cambrian Explosion began approximately 545 million years ago, during the Cambrian period. This was a period of rapid diversification and evolution of complex life forms, including the appearance of many animal groups that are still present today.

The Cambrian Explosion Began Approximately