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The FDA recognizes 118 routes of administration.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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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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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.
![The phosphorus cycle. Numbers are 1012 g P or fluxes as 1012 g P per year (data from Schlesinger 199](https://biology-forums.com/gallery/47/medium_33_17_02_12_7_02_17_2037874.jpeg)
![The nitrogen cycle. Numbers represent fluxes as 1012 g N per year (data from Schlesinger 1991, after](https://biology-forums.com/gallery/47/medium_33_17_02_12_7_02_17_2038129.jpeg)