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Question

First amphibians appeared during

Options

Choose one · Correct answer highlighted

Explanation

devonian reflects key principle in quiz on geological time scale+pyqs, where evolutionary mechanisms shape genetic variation and adaptation. In this context, devonian aligns with experimental and theoretical evidence from population genetics, behavioral ecology and molecular phylogeny. Textbooks like Campbell Biology, Futuyma Evolution and Hartl Principles illustrate supporting data. Understanding why devonian fits helps integrate natural selection, environment.