Answer: Wind
Explanation:
A renewable source of energy won't be artificial or man- made. It's energy that won't run out.
DNA isolation is a process of purification of DNA from sample using a combination of physical and chemical method while on the other hand, Polymerase chain reaction (PCR<span>) is a technique used in molecular biology to amplify a single copy or a few copies of a piece of DNA across several orders of magnitude, generating thousands to millions of copies of a particular DNA sequence.</span>
<span>Enzyme and substrate bind using a lock-and-key mechanism. </span>
