Answer:
Según Sam W. Haynes, ¿cuáles fueron dos razones para la expansión de los Estados Unidos en
la década de 1840?
Sensible beauty pertains to the beauty of the person in their physical appearance while ethical beauty pertains to the beauty of the person's character or inner character where it does not rely on the outer image. The two are different in how they define beauty and how they are applied, the only thing that makes them similar is their similarities of trying to define what beauty means.
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:
