Vocabulary
embryo, vertebrate, invertebrate, fish, mammal, amphibian, bird, dorsal nerve cord, notochord, pharyngeal slits, tail, analogous, embryological similarities, evolution, fossil record, fossils, homologous, paleontologist, vestigial, Charles Darwin, Theory of Evolution, Of the Origin of Species, natural selection, genes, DNA, mutations; (structural, behavioral, physiological), environmental changes (variables), adaptation, population, predator\/prey, distribution of traits, reproduction cycle, carnivorous, extinct, global warming, herbivorous, habitat, Ice Age, insectivorous, defense mechanism, camouflage, embryo, vertebrate, invertebrate, fish, mammal, amphibian, bird, dorsal nerve cord, notochord, pharyngeal slits, tail, evolution, embryo, common ancestor, fetus, cleavage, zygote, vertebrates, comparative embryology
, embryo, vertebrate, invertebrate, fish, mammal, amphibian, bird, dorsal nerve cord, notochord, pharyngeal slits, tail, embryo, vertebrate, invertebrate, fish, mammal, amphibian, bird, dorsal nerve cord, notochord, pharyngeal slits, tail