Answer:In 1947, Salk took a position at University of Pittsburgh, where he began conducting research on polio, also known as infantile paralysis. By 1951, Salk had determined that there were three distinct types of polio viruses and was able to develop a "killed virus" vaccine for the disease.
Explanation:
Answer:
Buildings were destroyed, the population was crushed or asphyxiated, and the city was buried beneath a blanket of ash and pumice. For many centuries Pompeii slept beneath its pall of ash, which perfectly preserved the remains.
Explanation:
I know that using fake identification to vote is not the only form of voter fraud.
1, 4, 5, and 6 are all forms of electoral fraud.
I ned the points sorrrrryyyy
