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Author Question: The alimentary canal is a/an ________ tube that is approximately 30 feet in length. Fill in the ... (Read 24 times) |
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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The average adult has about 21 square feet of skin.
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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.