Answers
1. True
2. True
3. True
4. True
5. True
Answer is B. The length of a day on mercury is much longer than Earth
They are thus known as the "supporting cells" of the nervous system. The four main functions of glial cells are: to surround neurons and hold them in place, to supply nutrients and oxygen to neurons, to insulate one neuron from another, and to destroy and remove the carcasses of dead neurons (clean up).
