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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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The horizontal fraction bar was introduced by the Arabs.
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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
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Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.
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Your heart beats over 36 million times a year.
![Boundaries within landscapes created by human activity (background) and natural environmental gradie](https://biology-forums.com/gallery/47/medium_33_27_08_11_11_52_18_15341177.jpeg)
![The blue sticker on the rear of this vehicle indicates that it is designed to use compressed natural ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_3_34_49_29528381.png)