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:
They campaigned for suffrage and christian ideals, but they campaigned for laws to curb consumption of alcohol.
Answer:
In addition to six million Jews, more than five million non-Jews were killed under the Nazi regime. Among them were Gypsies, Jehovah's Witnesses, homo, blacks, the physically and mentally disabled, political opponents of the Nazis, including Communists and Social Democrats, dissenting clergy, resistance fighters, prisoners of war, Slave people
Answer:
freeways, skyscrapers, large populations, and smog are all words used to help describe what an urban area is like.
Explanation:
Farming describes what it sounds like, farm land.
Recreational land may define something like parks and ponds
Rural areas are like the suburbs of large cities and small towns.
Urban areas are big cities like New York and Miami.