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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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Everyone has one nostril that is larger than the other.
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Cyanide works by making the human body unable to use oxygen.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.