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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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There are 20 feet of blood vessels in each square inch of human skin.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.