The fossil record shows that life on earth has changed over time. for example, paleontologists have found that older rocks contain fossils a. organisms that are simpler than those alive today b. only organisms that are still alive today c. organisms that are more complex than those alive today d. both simple and complex organisms

A. Organisms that are simpler than those alive today

According to the beliefs of evolutionists, creatures needed more back then to be able to survive easier, as those that were more complex. As the " 'evolve' ", they become more simpler, as they got rid of organs that they didn't need.

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