Is Dogfish a mammal? The spiny dogfish, spurdog, mud shark, or piked dogfish (Squalus acanthias) is one of the best known species of the Squalidae (dogfish) family of sharks, which is part of the Squaliformes order. Are Dogfish a type of shark? Atlantic spiny dogfish are small sharks with a long and complex history in […]
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Who started epidemiology?
Who started epidemiology? John Snow is famous for his investigations into the causes of the 19th-century cholera epidemics, and is also known as the father of (modern) epidemiology. He began with noticing the significantly higher death rates in two areas supplied by Southwark Company. How old is the science of epidemiology? Epidemiology emerged as a […]
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What did Karl Marx think about wages?
What did Karl Marx think about wages? Marx blamed unemployment on capitalists. He renewed Ricardo’s belief that the exchange value of any product was determined by the hours of labour necessary to create it. Furthermore, Marx held that, in capitalism, labour was merely a commodity: in exchange for work, a labourer would receive a subsistence […]
Who invented the smoke detector in 1969?
Who invented the smoke detector in 1969? Duane D. Pearsall When did smoke detectors come out? 1965 When was the first fire alarm installed? 1852 When did smoke detectors become popular? The company began mass-producing these units in 1975. Studies in the 1960s determined that smoke detectors respond to fires much faster than heat detectors. […]
What did the ancient Chinese call China?
What did the ancient Chinese call China? What did the ancient Chinese call their land? Why? The Chinese called their land the Middle Kingdom because they believed that China was the center of the earth. How did China get the name China? The name ‘China’ comes from the Sanskrit Cina (derived from the name of […]
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Why was Clint Eastwood called Blondie?
Why was Clint Eastwood called Blondie? In A Fistful of Dollars, he is called “Joe” by the undertaker, Piripero, and Eastwood’s role is credited as “Joe”. In The Good, the Bad and the Ugly, Tuco calls him “Blondie” (“il Biondo”, meaning “the Blonde one”, in Italian) for his light hair. How much was Clint Eastwood […]