The nerves that make up the spinal cord carry commands between the and the brain. a. peripheral nerves b. spinal nerves c. motor nerves d. cranial nerves

The nerves that make up the spinal cord carry commands between the B. spinal nerves and the brain.

Spinal nerves are also known as mixed nerves because they carry with them various functions such as motor, sensory, and autonomic nerves. They are responsible for carrying out signals from the brain to the body. There are a total of 31 pairs of spinal nerves in the vertebral column. 

It should be cryosphere and hydrosphere