Hard water<span>... is </span>water<span> that contains an appreciable quantity of dissolved minerals (like calcium and magnesium). </span>Soft water<span>... is treated </span>water<span> in which the only ion is sodium. As rainwater falls, it is naturally </span>soft<span>. </span>
I think it’s A I’m not 100% sure but I mean it’s worth a try
Answer:
Explanation:
A protein is a long chain of amino acids linked together by amide groups.
The general structure is