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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
![Two important changes occur in the upper airway in croup:The epiglottis swells, thereby occluding th](https://biology-forums.com/gallery/47/medium_14755_05_10_12_4_11_17_92641447.jpeg)
![Earth’s history spans 4.5 billion years. Geologists and paleontologists have pieced together the his](https://biology-forums.com/gallery/47/medium_274477_04_02_15_12_24_30_2057231.jpeg)