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Which cells are derived from the yolk sac and form a connective tissue layer?
Scopes Trial
1925 trial of John Scopes, Tennessee teacher accused of violating state law prohibiting teaching of the theory of evolution; it became a nationally celebrated confrontation between religious fundamentalism and civil liberties.
National Radio
A broadcasting service that is owned, financed, or regulated by the government of a country and serves the entire nation.
Stock Market Crash
Also known as Black Tuesday, a stock market panic in 1929 that resulted in the loss of more than $10 billion in market value (worth approximately ten times more today). One among many causes of the Great Depression.
Great Depression
A severe worldwide economic downturn that lasted from 1929 to the late 1930s, marked by mass unemployment, deflation, and widespread poverty.
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