<h2>see in the attachment hope it helps you</h2>
<span>absorbed, radiated
Hope this helps. </span>
<span>The following is the role of NaCl and EDTA in DNA isolation, hope it helps:
NaCl provides Na+ ions that will block negative charge from phosphates on DNA.
Negatively charged phosphates on DNA cause molecules to repel each other. The Na+ ions will form an ionic bond with the negatively charged phosphates on the DNA, neutralizing the negative charges and allowing the DNA molecules to come together.</span>
I am pretty sure that the answer is B. extrusive rock. I hope that this helps you!! Good Luck!!
