micro sup sup water =]

wahahahaha account the best ^^

haha..wants are greater than limited resources..xD

cost of choices in terms of next best alternative foregone XD

wahh..chiim..lol

tmr wil come out wan a.. gg XD

haha..thanks thanks!lol

lol

summore got diminishing marginal utility..lol

ppc?/

harh? i tot ppf?

production possibility curve lol. same nia gua XD

hmm..production possibility frontier curve? lol..same gua..lol

frontier also same lo.. or boundary

ppc = ppf. got 2 different ways of conveying it.