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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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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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The FDA recognizes 118 routes of administration.
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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.