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Author Question: Health experts recommend that to be considered active, a person should accumulate the equivalent of ... (Read 42 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 lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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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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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.