Answer:
D. The nerves exit the central nervous system in the head and from the lumbar spine.
Explanation:
The preganglionic neurons transmit the nerve impulses through the cranial or spinal nerves that arise from the brain, to the postganglionic neurons from where the nerve fibers that relay these nerve signals to the different viscera and effector organs, located along the spinal cord
Explanation:
hemoglobin is that pigment which is present in erythrocytes and transports oxygen.
Answer:
Unlike the one-way flow of energy, matter is recycled within and between ecosystems.
Explanation:
