Oxygenated blood Platelets 1. None of the Above 3. They all belong together. Circulatory System Urinary System Immune System Human Skeleton Reproductive System Fluid can go in, but not out. Evolution occurs very quickly and then it stops.
Evolution occurs when children mature into adults.
Evolution occurs by gradual changes in a population. Evolution never occurs, it is just an idea. This scientist that believed that species change through acquired characteristics. All components are included in the cardiovascular system except the Heart Bone Marrow Blood Vessels Brain None of the above The Respiratory system involves the Stomach Lungs Bone Marrow Esophagus Anus 1. All species evolved from a more primitive ancestral species.