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Abiogenesis is the process by which life first arose from nonliving materials. An explanation for the origin of life must account for the formation of biological molecules, such as nucleic acids and polypeptide chains.

Which of the following BEST describes how scientists have tested hypotheses about the formation of the first biological molecules?


Dating the oldest known fossils.


Observing interactions of inorganic molecules in the modern atmosphere.


Simulating the possible conditions of early earth in a lab setting.


Studying other planets in the solar system to learn about earth at the time life began.

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