Question
Which of the following is in the correct order?
A. Cambrian explosion, Most complex life forms evolved, Single celled organisms appeared, Oceans formed
B. Cambrian explosion, Oceans formed, Most complex life forms evolved, Single celled organisms appeared
C.Single celled organisms appeared, Cambrian explosion, Oceans formed, Most complex life forms evolved
D.Oceans formed, Single celled organisms appeared, Cambrian explosion, Most complex life forms evolve