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In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it.
A mound of buffalo skulls. In 1870 an estimated 30 million buffalo roamed the plains; by 1900 there
The illusory bands visible in this figure are often called Mach bands, although Mach used a ...
The myeloma cells do not grow in a selective media called HAT because they cannot synthesize DNA ...
Solar energy heats the atmosphere, creates seasons, and causes air to circulate
A Gaucher cell showing accumulated fat stored in structures called lysosomes