1. Scientists who argue that modern humans evolved from a single population believe that humans came from the continent ofA. Europe.B. Africa.C. Asia.D. South America.2. Any trace of a dead organism such as an imprint in a rock is called aA. homologous structure.B. transitional form.C. strata.D. fossil.3. Most scientists now believe that birds evolved directly from bipedalA. amphibians.B. lizards.C. dinosaurs.D. marsupials.4. The similarity of the characteristics of sheep and reindeer is due to their having a common ancestor. This sort of phenomenon is calledA. homology.B. convergent evolution.C. taxonomy.D. parallel evolution.