The best answer for the blood vessels' valves would be these are veins that would then help in preventing the back flow of blood because the walls have small muscle to pump the blood back to the heart.Hope this is the answer.
Answer:
Respiratory, Muscular, and Skeletal
Explanation:
answer is getting a ride from a family member.
using public transportation to get to his appointment.
contacting his insurance company to see if there is a therapist who is closer to his home.
Answer:
Before the Civil War, Philadelphia was a center of shipyards and manufacturing.
Explanation:
At the beginning of the 19th century, Philadelphia experienced an important economic growth thanks to its agricultural and mining wealth; the construction of routes, canals and railroads allowed the city to maintain its privileged position in the industrial revolution. The textile industry, the confection, the metallurgy, the manufacture of paper and of railway material, the naval construction in the shipyards and the agricultural industry were the main industries of the 19th century. Philadelphia was at the same time a financial center of prime importance. During the Civil War, the factories of the city supplied the armies of the Union.
