Hi 

I really need your help!

Does anyone here know the three types of exchange?

As you can see, it's a boring assignment from a minor subject, SOCIOLOGY.

I already researched about it but the results were too vague and not to be trusted because it appears differently from different sites.

Please. Help. I'll give you 500 karma points.

Thanks!

P.S. I'm dying since I still have so many things to do in my major subjects and my course is accountancy. *faints*

I just want to finish everything by tonight so I would be able to rest the next day before Monday.

Peace :)