I would say that the answer would be MASS.
Answer:
Icy roads
Explanation:
There is so little friction you slide on it way more than other roads. :)
The characteristic of epithelial cells that makes them ideal for providing this type of protection is that the cells are packed tightly together.
Skin, the body's largest organ,is our first and best defense against external aggressors. The many layers work hard to protect us, however when its condition is compromised, its ability to work as an effective barrier is impaired.
