Vocabulary
nervous tissue, neurons, stimulus, reaction, organs, automatic reflex, external stimulus, motor neurons, sensitivity, 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, adaptations, physical structures, internal processes, behaviors, genetic mutations, traits, distribution of traits, camouflage, predator, prey, natural selection, fur, flippers, evolve, 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, adaptations, physical structures, internal processes, behaviors, genetic mutations, traits, distribution of traits, camouflage, predator, prey, natural selection, fur, flippers, evolve, adaptations, physical structures, internal processes, behaviors, genetic mutations, traits, distribution of traits, camouflage, predator, prey, natural selection, fur, flippers, evolve