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Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r
The continents were not always in their present positions. The position of the continents is importa
Eighteen-year-olds were the largest age cohort in the first year of the war in both armies. Soldiers
Luna Park at Coney Island was a vast living theater in which strollers were both spectators and acto
Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ...
A lesion called a plaque in the brain of an individual with Alzheimer disease. A ring of degeneratin