Lack of vitamin D has been linked to increased risk for autoimmune diseases.
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Genetic code is a sequence of 3 letter word, known to be one after the another along the length of the DNA.
<span>Valence is defined as number of electrons that are present in the outermost orbital. Oxygen is in the 16th column of the periodic table and the total number of valance electrons is determined by units place digit of the column position which is 6 for oxygen. The outermost orbital is the high energy level and there are two in that orbit. So the valance is +2.</span>
Cross contamination means the transfer of pathogens from surface to another
D. Nucleus
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