The most common nutrient deficiency in the world is Iron.
Iron is the answer.
Final answer:- a) Iron
Answer:
water
water is the worlds best solvent cause it can melt many different things also it is called the "Universal Solvent"
The answer is common table salt. Looking at the chemical make up, putting an acid (I think chlorine) and and base (probably sodium) makes water (H20) and salt. So you answer would be salt
