well actually, you forgot Francium
also, ITT fags bitch about homework
it's useful to some of us unscrupulous bastards who are too lazy to actually study. if there were no homework, i'd barely review material. it's basically a mechanism to educate lazy yet motivated people. although i'll admit it doesn't help me much since i pretty much remember everything from lecture anyways.
also, tap water is awesome. it's cheap as free, tastes fine (COfag).