a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor
2: Oxygen level in the babys blood It is measured by either taking a small sample of blood either from a catheter in an artery (like the UAC) or by a blood from a heel stick, or indirectly by measurements from the pulse ox
an independent agency of the federal government responsible for mail delivery (and sometimes telecommunications) between individuals and businesses in the United States