As Mia mixed two substances in a test tube, she noticed that the test tube became warm. She also noticed gas coming from the test tube. Based on Mia's observations, what was most likely occurring inside the test tube?

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.