I don't really know what the question is
Answer:
Explanation:
tabaquismo;
contaminación del aire en espacios cerrados;
contaminación exterior;
alérgenos;
exposición a riesgos ocupacionales como el polvo y productos químicos.
Many people believe the United States should of helped Germany after World War One. After WW1 the Treaty of Versailles created a great depression in Germany, because of the aggressive reparations. Many historians believe that the end of WW1 caused World War 2.
Marie curie - discovered new elements
Louis Pasteur- created vaccines
Gregor Mendel- discovered heredity
Joseph lister - proved the importance of sterilizing medical equipment
George Washington carver- pioneered new agricultural techniques
