From Wikipedia, the free encyclopedia. An essential nutrient is a nutrient required for normal human body function that either cannot be synthesized by the body at all, or cannot be synthesized in amounts adequate for good health (e.g., niacin, choline), and thus must be obtained from a dietary source.rom Wikipedia, the free encyclopedia. An essential nutrient is a nutrient required for normal human body function that either cannot be synthesized by the body at all, or cannot be synthesized in amounts adequate for good health (e.g., niacin, choline), and thus must be obtained from a dietary source.
The Ozark s, also referred to as the Ozark Mountains and Ozark Plateau, is a physiographic region in the U.S. states of Arkansas, Missouri, Oklahoma, and Kansas. The Ozark s cover a significant portion of northern Arkansas and southern Missouri, extending from Interstate 40 in Arkansas to the suburbs of St. Louis.
acquired November 13, 2002 download large image (4 MB, JPEG, 3076x2307) Prairies stretch across much of Oklahoma, but the state also holds mountain ranges, including the Ouachita Mountains in the southeastern corner. Formed over 300 million years ago, these mountains are a highly eroded remnant of a much larger range, one that may have stretched from Texas into southeastern Canada.