MDCAT Biology MCQ #3637

A fossil record shows a sudden appearance of complex life forms. What is this phenomenon called?

MDCAT Biology MCQ #3637

  1. Question 1

    Q1. A fossil record shows a sudden appearance of complex life forms. What is this phenomenon called?

    • A) Cambrian explosion
    • B) Mass extinction
    • C) Gradualism
    • D) Punctuated equilibrium

    Answer: Cambrian explosion

    Explanation: Cambrian explosion refers to sudden appearance of complex life