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Author Question: Human beings are all members of a. a single biological species. b. various species, depending on ... (Read 441 times) |
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Everyone has one nostril that is larger than the other.
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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
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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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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.