nitric oxide is naturally prodused in the body. its function is to relax the blood vesssel walls, alloâ¦wing them to dilate. the theory goes, if you are able to increase the levels of NO, you can dilate the blood vessels for a longer period of time, thus allowing more blood to flow to the muscles.
it is actually very simple. Mine is a pronoun, that is, a word that takes the place of a noun or noun phrase. My is a possesive determiner, that is, a word that occurs together with a noun and serves to determine the reference of that noun in the context.
When u use mine it shows object is important but when u use my that means subject is important ex: if there are a lot of books and u choose one of them u use mine. If you copy an answer from another italki page, please include the URL of the original page. My girlfriends are all mine.  Mine: is a possessive pronoun.