Answer:
Areas where the myelin sheath has degenerated
Explanation:
Multiple sclerosis is a disease of the nervous system where the myelin sheath is damaged, and impairs its ability of conducing signals in the affected nerves, causing serious deficiencies in many life aspects (movements, sensations, cognition etc).
Cold air usually pushes warm air because cold air has a HIGHER DENSITY
Mitoses and Asexual Reproduction by cell division,one cell divides to become two
