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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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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.

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There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

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Approximately 500,000 babies are born each year in the United States to teenage mothers.

Phytochrome controls germination by responding to red/far red light signals. Phytochrome controls germination by responding to red/far red light signals.
After being sure all pads are correctly positioned, use the electromechanical controls to raise the ... After being sure all pads are correctly positioned, use the electromechanical controls to raise the ...
The bimetallic temperature sensor spring controls the amount of silicone that is allowed into the ... The bimetallic temperature sensor spring controls the amount of silicone that is allowed into the ...
Controls of Temperature Controls of Temperature
If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ... If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ...
Content of genomic versus cDNA libraries Content of genomic versus cDNA libraries
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