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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.