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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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In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Illicit drug use costs the United States approximately $181 billion every year.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.