The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.
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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
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The horizontal fraction bar was introduced by the Arabs.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
Respiratory system of a bird.
respiratory system
The respiratory system.
How to choose the correct u and dv when you integrate by parts
Under ideal conditions, a single cell of the bacterium E. coli would divide every 20 minutes to ...