SPAM IT and TAG ME IN IT I am trying to stop inappropriate stuff on here and people are reporting me. THIS IS A WEBSITE TO HELP PPL WITH SCHOOL WORK! And if you have a problem with me spreading the message, I don't care. If I get banned trying to make this app kid friendly, I am gonna keep making accounts. IT IS NOT OKAY FOR PPL TO POST INAPPROPRIATE PICS ON A SCHOOL WEBSITE. REPORT THEM, NOT ME!
DO IT FOR THE KIDS PLEASE! PLEASE AND THANK YOU!

Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.