Thank you iansmith very much,
Honestly, I search and teach myself these things, independently and individually, which I think will be very hard or finally a zero might be returned but I found myself that I like it, that is why I make questions, I "go" around here and there searching for any things i don't know, I am not belonging to institutions as you may be thinking. Yes, my school has a lot different department but I amnot about engineering, I am not majoring in computer science or biology, but I was lucky(??well??) to know some sites where i read and learn all of what they say.
I know it is hard for you or anyone to believe in what i say, but that is truthful. Moonbear told that i should take some courses in other department about biology but I think that is impossible, because there are a lot reports I have to hand in each week...All the subjects are elective but a certain number of credits are needed if students want to "go up", and if the records are badly evaluated, possibilities of payment and no-money-in-pocket get higher...:smila:
Again, thank you very much,