Today the average age of the nation's nuclear workers is about 50. Many will be eligible to start retirement at 55. Within five years, about 35 percent of the specialists who have been running U.S. nuclear plants for the past quarter-century -- about 19,600 people -- are expected to begin a mass retirement.
How many different kinds of amino acids make up proteins?: 20 259. How many hydrogen atoms are attached to each carbon adjacent to a double bond?: 1 260. How many minerals are known to be required in the diet of human beings?: 16 261. How many subgroups comprise the vegetable food group?: 5 262. How many vitamins are known to be required in the diet of human beings?: 13 263. If a group of people consumed an amount of protein equal to the average requirement for their population group, what percentage would receive insufficient amounts?: 50 264.
Vitamin B12 is naturally found in animal products and fortified into non-meat sources. Healthy adults need at least 2.4 micrograms of vitamin B12 every day. For vegetarians and vegans, consuming adequate amounts of non-meat sources enriched with B12 is essential for health.