Answer:
A: Myelin sheath
Explanation:
Myelin sheath swiftly transmits electrical impulses along nerve cells.
Hardness is the answer I believe
Answer:
Social science, any branch of academic study or science that deals with sociology, psychology, political science, and economics. Most historians, however, consider history as one of the humanities.
HOPES THIS HELPS BRO!!!
Capillaries are one cell thick and so this makes them very thin. capillaries are also arranged in networks known as capillary beds, and thus multiple capillaries are spread over a large area.
