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Human being have thirty-three or thirty-four vertebrae, but a snake may have as many as three hundred.

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Langston Hughes, a prolific writer of the 1920s was concerned with the depicting the experience of urban Black people in the United States.

Recent studies have shown that air into a house often has higher concentrations of contaminants than heavily polluted air outside.

Among almost seven hundred species of bamboo, some are fully grown at less than a foot high, while other can grow three feet in twenty-four hours.

For make adobe bricks, workers mix sand and clay or mud with water and small quantities of

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