Question

Which list shows the order of original appearance on earth, from the earliest to the most recent organism? A. bacteria, lizards, rhinoceros, trilobites

  B. bacteria, rhinoceros, lizards, trilobites   C. trilobites, lizards, rhinoceros, bacteria   D. bacteria, trilobites, lizards, rhinoceros

Answer 1

The order of original appearance on earth, from the earliest to the most recent organism is D. bacteria, trilobites, lizards, rhinoceros. Bacteria appeared in the Proterozoic era (2500-541 million years ago). Trilobites appeared in the Cambrian period (541-485 million years ago). Lizards appeared in the Jurassic period (201-145 million years ago). Rhinoceros appeared in the Neogene period (23-2.6 million years ago). Thus, the choice D is the right choice.