True. such as with pesticides, they are used to reduce harmful insects to crops but they often re harmful to the health of people consuming those crops
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>Any physical or psychological event that produces stress</span>
