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Author Question: According to the text, how many hours of sleep do typical adolescents need per night? a. 68 hours ... (Read 43 times) |
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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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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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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.