Problem
The estimated average daily requirement of folic acid for pregnant females is 520 micrograms. Which accurately expresses this value? $520 \mathrm{mg}$ $520 \mathrm{Mg}$ $520 \mathrm{mG}$ $520 \mu \mathrm{g}$
Solution
Step 1 ：The question is asking to express the given value in the correct unit. The unit given in the question is micrograms, which is denoted by the symbol \(\mu g\). Therefore, the correct expression for the value is \(520 \mu g\).
Step 2 ：Final Answer: The correct expression for the value is \(\boxed{520 \mu g}\).
