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  1. A.Schatz. Albert Israel Schatz (2 February 1920 – 17 January 2005) was an American microbiologist and science educator, best known as the discoverer of the antibiotic streptomycin. Schatz graduated from Rutgers University in 1942 with a bachelor's degree in soil microbiology, and received his doctorate from Rutgers in 1945.

  2. en.wikipedia.org › wiki › PetroleumPetroleum - Wikipedia

    1 day ago · A sample of petroleum. Pumpjack pumping an oil well near Lubbock, Texas. An oil refinery in Mina Al Ahmadi, Kuwait. Petroleum, also known as crude oil and oil, is a naturally occurring, yellowish-black liquid found in geological formations beneath the Earth's surface. It is commonly refined into various types of fuels. Components of petroleum are separated using a technique called fractional ...

    • 83 to 85%
    • 0.1 to 2%
    • 10 to 14%
    • 0.05 to 1.5%
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