Hi guys, this is one of the questions on an internal assessment that i have to do. it talked about carbon-14 and how it has a half-life of 5730 yrs. "In a sample of bone discovered in a Neolithic grave, the amount of radioactive C-14 was found to be only 1% of that in living things. How old was the bone?" I really don't know where to start, I mean...how do we know how much are in living things? Doesn't it vary from one to another? Please help me as soon as you get a chance. I'm in a bit of a hurry. Thanx!