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One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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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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Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
In the 1800s, most people were poor, and formal education beyond the first several grades was a ...
A typical ratchet used to rotate a socket. A ratchet makes a ratcheting noise when it is being ...
A typical hacksaw that is used to cut metal. If cutting sheet metal or thin objects, then use a ...
Cutaway view of a typical alternator.
Typical optical distributor.
A typical reaction in which NAD+ acts as an oxidizing agent