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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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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.