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Author Question: What procedure is used when heating a brazed copper joint? A) Heat the fitting first and then ... (Read 19 times) |
Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Thyroid conditions may make getting pregnant impossible.
Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.
As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.