What was the Cambrian explosion?
A)the impact of the meteor that led to mass extinction of the dinosaurs
B)the initial spark of lightning that created the first life-form from amino acids
C)the eruption of the volcano known as Cambria on the ancient supercontinent of Pangaea
D)a dramatic diversification of life that began about 540 million years ago
E)the largest mass extinction in Earth's history

Question

Quizplus · Accepted Answer

The Cambrian explosion refers to a period of time about 540 million years ago when there was a sudden and dramatic diversification of life on Earth. This was characterized by the appearance of a wide variety of new animal species, many with hard shells or skeletons, for the first time in the fossil record. It is considered to be a major turning point in the evolution of life on Earth.

What Was the Cambrian Explosion