The rods of cells move upward through the skin as a new cells form beneath them. As they move up , they’re cut off from their supply of nourishment and start to form a hard protein called keratin. This happen as the hair cells die .
A simple diffusion works best for this
Answer:
It led to the construction of 41,000 mile network of interstate highways.
Explanation: This act was part of an important series of legislation designed to improve the nation's infrastructure.
Investors were looking for places to build textile mills.