To separate<span> the substances in a </span>compound<span>, a chemical reaction is required. Running electric current through water will produce hydrogen and oxygen gases. This process is called electrolysis. Substances in mixtures can be separated using physical change processes.</span>
Which one of what? Can you tell me what your talking about?
Explanation:
It doesn't get enough air because the cold air can't hold as much water vapor as warm air so it dries out any water left in the air..
