should've payed attention in science. covalent bonds are about the same realisticly but can be stronger, so in the context which you will be using it i'm sure it will be safe to assume that covalents are stronger
wow a two year gap between this post and your last one. </nosey> look's erm interesting , the stem bars look a tad low if we're being aesthetical. spec?
you can change the levels on the songs in iTunes though... unless it actually restricts the amplifier/whatever. good idea in theory but loud music is good for you