I'll pay someone to do my economics or history work/class

You can't do this in you cannot just let somebody do your whole class for you that's just wrong..

just finished this it is b. centrifugal force

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.