According to the fossil record, which of these evolved after amphibians? check all that apply. mammals sponges fish bacteria reptiles mark this and return

Can happen anywhere along the spine if the neural tube does not close all the way. the backbone that protects the spinal cord does not form and close as it should. this often results in damage to the spinal cord and nerves. a) cleft palate b) spina bifida c) encephalocele d) down's syndrome