lets say you have a food site in the English language but is has food recipes mostly popular in Brazil and India... would adsense clicks be a lot less due to the fact that the clicks are coming from these countries rather than the USA?
yes of course they'll be a lot less since the price depends on the competition and therefore is also based on geographical location
If youre talking bout what you get per click (CPC) then yeah Colin is right, but if youre talking about the number of clicks (CTR) then it depends. You see, one of the strategy to increase CTR is actually not giving what the visitors want, but just enough to tease them, make them want more which leave them with two options, go back to SE or click the ads. If your ads is targetted enough with good placement, most of the time they will click ads rather than clicking the back button.
You will not loss the clicks, but you may loss the cpc, means average cost per click will be lower than those in US and UK like countries. Because most ads are location targeted and the currency rate in that country will affect your overall income.