Examlex
If a jet's cruising altitude is 32,200 ft (to three significant figures) , this distance in km is: (1 mile = 1.61 km; 1 mile = 5280 ft)
Food Substances
Components or ingredients used in the making of food, which can range from basic natural products to artificially produced compounds.
Vitamins
Organic compounds that are essential in small amounts for the body to maintain health, usually obtained through diet.
Organic Substances
Compounds that contain carbon and are found in living organisms.
Essential
Necessary; when referring to blood pressure, indicates an elevation without apparent cause.
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