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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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