Since a prototype of Golden Rice was developed in the year 2000, new lines with higher β-carotene content have been generated. The intensity of the golden colour is a visual indicator of the concentration of β-carotene in the goal is to make sure that people living in rice-based societies get a full complement of provitamin A from their traditional diets. This would apply to countries such as India, Vietnam, Bangladesh. the Philippines, and Indonesia. Golden Rice could still be a valuable complement to children's diets in many countries by contributing to the reduction of clinical and sub-clinical vitamin A deficiency-related diseases.
Minor (nonfederal) leveed areas were mapped using the best available elevation data that capture leveed features. In some cases, however, breaks in elevation occur along leveed areas because of flood control features being removed from elevation data, limitations of the horizontal and vertical resolution of the elevation data, the occurrence of levee drainage features, and so forth. Flooding behind levees is only depicted if breaks in elevation data occur or if the levee elevations are overtopped by the water surface. At some flood levels, alternate pathways around—not through—levees, walls, dams, and flood gates may exist that allow water to flow into areas protected at lower levels. In general, imperfect levee and elevation data make assessing protection difficult, and small data errors can have large consequences.
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