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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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On average, the stomach produces 2 L of hydrochloric acid per day.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Blood is approximately twice as thick as water because of the cells and other components found in it.