Which of the following events is the oldest in the history of life evolution on Earth?
A) the Cambrian explosion
B) the appearance of the first plants on land
C) the demise of the dinosaurs
D) the branching of primates away from other mammals
E) the first human civilizations

Question

Quizplus · Accepted Answer

The Cambrian explosion, which occurred around 541 million years ago, is the oldest event listed. It marks a period of rapid diversification of life forms on Earth.

Which of the Following Events Is the Oldest in the History